Grade 11 Numbers and Arithmetic

The speed of light is 3 x 10^{5} kilometers/second. If the sun is . . .Grade 11 Numbers and Arithmetic

The North American emergency telephone number is 911. How many three-digit . . .Grade 11 Numbers and Arithmetic

Choose the answer without using a calculator. Which number is evenly . . .Grade 11 Numbers and Arithmetic

How many sets of at least two consecutive positive integers have a sum of 15?Grade 11 Numbers and Arithmetic

What is the sum of all the digits (not numbers) in the sequence 1, 2, 3, 4, . . . . .Grade 11 Numbers and Arithmetic

How many three-digit numbers which are multiples of 7 end with the digit 4?Grade 11 Numbers and Arithmetic

The date July 31, 1370 in MM/DD/YYYY format is a palindrome that may be read . . .Grade 11 Numbers and Arithmetic

We use the decimal number system with base 10. The binary numeral system . . .Grade 11 Numbers and Arithmetic

How many two-digit numbers have exactly five divisors including 1 and . . .Grade 11 Numbers and Arithmetic

Make 33 by using three 3s and any math operators. How many times do you use . . .Grade 11 Numbers and Arithmetic

The sum of two prime numbers is equal to 888. There are several options. We . . .Grade 11 Numbers and Arithmetic

The last digit of the number 9^{100} is Grade 11 Numbers and Arithmetic

The typical healthy resting heart rate in adults is 60–80 beats per minute. . . .Grade 11 Numbers and Arithmetic

Pairs of primes separated by a single number are called prime pairs. Examples . . .Grade 11 Numbers and Arithmetic

Find the last 3 digits of the sum of 1 + 11 + 111 + . . . + 111 . . . 111, . . .Grade 11 Numbers and Arithmetic

A number is palindromic, if it is the same backwards as forwards. Of the . . .Grade 11 Numbers and Arithmetic

If you sum all the numbers between 1 and 11111, what number is the result? By . . .Grade 11 Numbers and Arithmetic

Which is not correct? Remember that 3! = 1 x 2 x 3Grade 11 Numbers and Arithmetic

You can throw an unlimited number of darts at the dartboard. Some total . . .Grade 11 Numbers and Arithmetic

How many sets of three consecutive integers whose product is equal to their sum . . .Grade 11 Numbers and Arithmetic

If the sum of three distinct positive integers is 33, what is the maximum . . .Grade 11 Numbers and Arithmetic

The product of two integers is 1000. Neither of the numbers contains a zero. . . .Grade 11 Numbers and Arithmetic

What is a mystery number if you add it to 1, then multiply by 2, then add 3, . . .Grade 11 Numbers and Arithmetic

The product of 99 integers is 99. What is the largest possible value the sum . . .Grade 11 Numbers and Arithmetic

What is the smallest number greater than 2000 that is evenly divisible by all . . .Grade 11 Numbers and Arithmetic

How many digits are in the number 20^{15}?Grade 11 Numbers and Arithmetic

What is the smallest 7-digit prime number? A prime number is a natural number . . .Grade 11 Numbers and Arithmetic

Leslie Green asks: Find the ratio A/B where A is the number of elements in . . .Grade 11 Numbers and Arithmetic

As n goes to infinity, what is the limit of n / (n-1)?Grade 11 Numbers and Arithmetic

The product of real positive numbers a, b, c, and d is equal to 1. What is . . .Grade 11 Numbers and Arithmetic

The sum of the digits of a four-digit number is 15. All the digits are . . .Grade 11 Numbers and Arithmetic

Find the sum of the digits of the first 100 positive integers: 1 + 2 + 3 + . . .Grade 11 Algebra

Simplify the expression 12(3 + x) – 4(5x – 6).Grade 11 Algebra

In the equation y = 9x^{2} – 1, which is the value of x when y = . . .Grade 11 Algebra

SimplifyGrade 11 Algebra

What transformation creates an image with a vertex at the origin?Grade 11 Algebra

What relation goes through points A, B and C?Grade 11 Algebra

Which point would be on a line passing through C and perpendicular to the line . . .Grade 11 Algebra

Between what two whole numbers does the result lie?Grade 11 Algebra

Which of the following green areas best represents the graph of the inequality y < . . .Grade 11 Algebra

**A** is the set of all points (x,y) in the shaded region. Find the set . . .Grade 11 Algebra

Which of the following graphs represents all values of x such that Grade 11 Algebra

The last digit of the number 3^{33} is:Grade 11 Algebra

Which of the following could be a value of x?Grade 11 Algebra

A perfect cube is an integer whose cube root is an integer. For example, 64 . . .Grade 11 Algebra

2 + 2 = 5 Find an error in the proof.Grade 11 Algebra

Find the expression that is INCORRECT.Grade 11 Algebra

Find the expression that is INCORRECT.Grade 11 Algebra

Find the value of F, if a = 0.2.Grade 11 Algebra

Eugenia used 192 digits to number the pages in her diary. How many pages . . .Grade 11 Algebra

Which of the following gives the largest value?Grade 11 Algebra

Do these rays have one point of intersection? If yes, find the x-coordinate . . .Grade 11 Algebra

What is the largest product of positive integers that add up to 17?Grade 11 Algebra

Identify the location of point E after the transformation (x^{2} + 4, . . .Grade 11 Algebra

How much does the maximum value of 2 - 2sin(x) exceed the maximum value of . . .Grade 11 Algebra

Which point is on the axis of symmetry of the graph of the parabola? Grade 11 Algebra

Xia and Yvonne collect buttons. Xia only collects the ones with two holes and . . .Grade 11 Algebra

Nine teams enter a basketball tournament. Each team plays one match against . . .Grade 11 Algebra

A frog ate 20 flies in a day. Each day, the frog ate 20 more than on the day . . .Grade 11 Algebra

If the admittance rate to a prestigious university is 7.5% and 810 students . . .Grade 11 Algebra

Mr. Rapid always starts driving on a motorway at exactly 7:00 a.m. If he . . .Grade 11 Algebra

In a city, three-quarters of the men are married to four-fifths of the women. . . .Grade 11 Algebra

Mr. Rapid always starts driving on a road at exactly 7:00 a.m. If he drives on . . .Grade 11 Algebra

There are N students in a class and only 8 of them are girls. If 11 boys . . .Grade 11 Algebra

The rear tires of my car wear out after 40,000 miles, whilst the front tires . . .Grade 11 Algebra

X^{2} = 4004001 Find X without using a calculator.Grade 11 Algebra

Ben ate 100 bananas between Monday and Friday, stopping for the weekend. . . .Grade 11 Algebra

Which gives the smallest answer if X and Y are integers, X is greater than . . .Grade 11 Algebra

On an island, the ratio between the number of adult men and the number of adult . . .Grade 11 Algebra

Which number could be written as a sum of 4 consecutive numbers?Grade 11 Algebra

Figure out without using a calculator which product is greater:Grade 11 Algebra

It takes two gardeners 6 days to mow a lawn. One is lazy and one is . . .Grade 11 Algebra

Derek dragon became a vegetarian two years ago. Derek likes to eat 3 baskets . . .Grade 11 Algebra

Find the ratio of the green and blue areas** y = x**^{2}. Grade 11 Algebra

Which of the following gives the largest answer?Grade 11 Algebra

I participate in a 10-day rally. The rear tires of my car wear out after 4,000 . . .Grade 11 Algebra

Two trains start at the same time, one from Zurich to Lausanne, the other from . . .Grade 11 Geometry

A rectangle has a width of 0.3x and a length of 0.4x. Which formula is the . . .Grade 11 Geometry

Which gives the largest answer?Grade 11 Geometry

The edges of a large cube are 3 times longer than the edges of a small cube. . . .Grade 11 Geometry

An arrow rotates 366° in one second. How many revolutions does it make in . . .Grade 11 Geometry

Two satellites orbit at 1/4 R above Earth's surface. R is the radius of the . . .Grade 11 Geometry

A mathematician wants to approximate the width of a lake. He places 5 markers . . .Grade 11 Geometry

What transformation creates an image with a vertex at the origin?Grade 11 Geometry

What is the area of the colored shape?Grade 11 Geometry

Angles A and C are equal to 90^{o}. Which proportion is true?Grade 11 Geometry

Each interior angle of a regular polygon measures 144^{o}. How many . . .Grade 11 Geometry

A square garden is 401 square meters. The minimum distance between apple . . .Grade 11 Geometry

If the Earth's radius is twice the radius of planet M, then how much bigger is . . .Grade 11 Geometry

A boy is making boxes from cardboard. He is going to cut square pieces off . . .Grade 11 Geometry

Alex wants to arrange the cylinders from least to greatest volume. What is . . .Grade 11 Geometry

Which shape would be made if the two sections were fitted together?Grade 11 Geometry

Five boys Andrew, Brandon, Chris, Daniel, and Ethan live on State Street. At . . .Grade 11 Geometry

A boy cuts a cardboard circle and only cuts 5 straight lines. He does not . . .Grade 11 Geometry

How many planes of symmetry does a cube have?Grade 11 Geometry

How many boxes measuring 0.1m x 0.1m x 6.9m can be packed into a container . . .Grade 11 Geometry

The figure shows a pyramid made of small squares. I want to move the small . . .Grade 11 Geometry

The American flag consists of thirteen equally spaced, horizontal red and white . . .Grade 11 Geometry

The figure shows a regular pentagon. Compare the values of angles A and B.Grade 11 Geometry

Divide the analog watch face with two straight lines so that the sums of the . . .Grade 11 Geometry

Look at the mini-golf course. To what point would the player hit the golf . . .Grade 11 Geometry

How many interior right angles are possible in a polygon with seven sides? Grade 11 Geometry

Bill mows the front lawn, which is a 7m by 10m rectangle. The mower cuts a 1m . . .Grade 11 Geometry

Among the following shapes of equal area, which has the largest perimeter? Grade 11 Geometry

A block of wood in the form of a cuboid 9 x 10 x 11 has all its six faces . . .Grade 11 Geometry

I fold a square piece of paper in half four times without unfolding, making an . . .Grade 11 Geometry

How many squares can be formed by joining four of these points on the . . .Grade 11 Geometry

If I tile a floor with 3000 regular hexagonal tiles as shown here how many . . .Grade 11 Geometry

Path C consists of straight segments. Path D and E consist of semi-circles. . . .Grade 11 Geometry

A circle is drawn through two vertices of a square so that it is tangent to . . .Grade 11 Geometry

I placed together four identical triangles and the square, without overlaps, to . . .Grade 11 Geometry

Compare areas F and G Grade 11 Geometry

What is the sum of the marked angles?Grade 11 Geometry

Eight points are equally spaced on a circle. How many right angled triangles . . .Grade 11 Geometry

The picture shows six equilateral triangles. The sides of the triangles are . . .Grade 11 Geometry

The picture shows a tiling pattern which is made of square green tiles 10 x 10 . . .Grade 11 Geometry

Fifteen billiard balls perfectly fit into a triangular rack. What is the . . .Grade 11 Geometry

What is the smallest number of segments that needs to be moved so that the . . .Grade 11 Geometry

All three circles are tangent to the horizontal line and to one another. The . . .Grade 11 Geometry

A girl wants to cut the paper into several equal pieces of the same shape, and . . .Grade 11 Geometry

Two lines and two diagonals are drawn through the center of the rectangle. . . .Grade 11 Geometry

How many circles are needed to separate each star from all of the others?Grade 11 Geometry

I would like to cut the shape into the fewest possible pieces that will fit . . .Grade 11 Geometry

The colored figure in the picture consists of isosceles right triangles. . . .Grade 11 Geometry

The vertices of the smaller square divide each side of the larger square by a . . .Grade 11 Geometry

I blew some air into a spherical balloon and quadrupled its surface area (4 . . .Grade 11 Geometry

Estimate the area of the largest equilateral triangle that can fit within a 1x1 . . .Grade 11 Geometry

Four matchsticks form a square. How many non-overlapping squares can be . . .Grade 11 Geometry

Guesstimation. How many tennis balls can fit in a school bus?Grade 11 Geometry

What is the maximum number of apples (ideal spherical units) that can touch . . .Grade 11 Geometry

I arranged twelve one-inch wooden sticks in a polygon with an area of 6 square . . .Grade 11 Geometry

Which reservoir has the smallest volume? Grade 11 Geometry

Anna has made puzzle pieces by cutting wedges from a disk. Each wedge cut from . . .Grade 11 Geometry

How many coins do I need to melt down and recast to get a single coin of double . . .Grade 11 Geometry

Shape A and B are congruent equilateral triangles. Shape C is formed by . . .Grade 11 Geometry

The diagram illustrates a row of three squares formed by matches. How many . . .Grade 11 Geometry

A boy stacked colored cubes in a square pyramid like the one shown here. The . . .Grade 11 Geometry

The figure shows a red equilateral triangle inscribed within another . . .Grade 11 Geometry

The three circles have fixed centers, and the diameter of a circle is 7 / 8 of . . .Grade 11 Geometry

For this rectangular solid, which plane(s) contain(s) C and is/are parallel to . . .Grade 11 Geometry

Two similar pyramids have volumes of 343 m^{3} and 64 m^{3}. . . .Grade 11 Geometry

Among the following shapes of equal perimeter, which has the smallest area? Grade 11 Geometry

Which triangle with sides a, b, and c has the largest area?Grade 11 Geometry

Squares 1, 2 and 3 have sides of length 1, 2 and 3 units, respectively. What . . .Grade 11 Geometry

A square with a side length 20 has two vertices on the circle, and one side . . .Grade 11 Geometry

Two squares, each with sides measuring 2 cm, are placed such that a vertex of . . .Grade 11 Geometry

A recipe makes 5 pizzas that are 12 inches in diameter. If I decide to make . . .Grade 11 Geometry

Two congruent circles share a radius. What is the perimeter of the figure . . .Grade 11 Geometry

What is the area of a garden? Grade 11 Geometry

The large and small circles touch each other. What part of the large circle . . .Grade 11 Geometry

Estimate how long the rope is if its diameter is 1 cm.Grade 11 Geometry

Find the ratio of the areas of the large and small squares.Grade 11 Geometry

What is the largest possible side size of an equilateral triangle that fits . . .Grade 11 Geometry

The hypotenuse of a right triangle is 6, and the length of one leg is 2 units . . .Grade 11 Geometry

What part of the rectangle is red if points A and B are the midpoints of the . . .Grade 11 Geometry

How many lines can be drawn in a plane so that they are equidistant from 3 . . .Grade 11 Geometry

Three overlapping squares form 5 squares including themselves in the picture. . . .Grade 11 Geometry

You have a 5kg weight and a 12kg weight. They are the same height and are . . .Grade 11 Geometry

Estimate the maximum number of smaller 1-inch circles that fit in a larger . . .Grade 11 Geometry

What is the volume in cubic inches of the pyramid with height 10 inches? The . . .Grade 11 Geometry

I want to divide this shape into four congruent pieces - all of precisely the . . .Grade 11 Geometry

Which pyramid has the largest volume?Grade 11 Geometry

Find the area of the colored rectangle.Grade 11 Geometry

Which line goes through the center of the circle?Grade 11 Geometry

All sides of the white cross are the same. What percentage of the square is . . .Grade 11 Geometry

What is the sum of the interior angles B and D of the pentagon if three other . . .Grade 11 Geometry

If I picked three red points, each in the middle of a different side of the big . . .Grade 11 Geometry

A large rectangle of perimeter 44 is divided into 10 congruent rectangles. . . .Grade 11 Data Analysis

Five percent of the marbles in a jar are black. One fourth of the marbles . . .Grade 11 Data Analysis

A bag contains 6 green, 5 gray, and 4 violet disks. If 2 disks are drawn at . . .Grade 11 Data Analysis

If two dice are rolled 72 times, how many times is the sum of the two top . . .Grade 11 Data Analysis

A city hall contains 165 chairs. The first row has 10 chairs. Each additional . . .Grade 11 Data Analysis

Which number could be removed from the set without changing the average . . .Grade 11 Data Analysis

The first person is 100 cm tall. Each next person is 20% taller than the . . .Grade 11 Data Analysis

Five students put their sandwiches into five paper bags. The bags are . . .Grade 11 Data Analysis

Four kinds of apples are combined in a box. I select apples from the box . . .Grade 11 Data Analysis

Alex received a 70 on his essay and a 90 on his final. He got an 80 on class . . .Grade 11 Data Analysis

Statistics show that for every 100 babies born in Funny Town, there are 10 more . . .Grade 11 Data Analysis

John arrives at crossroads A from the North. He makes four moves each time . . .Grade 11 Data Analysis

99 numbers have an average of 101. Ninety of these numbers have an average of . . .Grade 11 Data Analysis

The average of a set of 12 numbers is 1. If 18, 50 and -20 are added to the . . .Grade 11 Data Analysis

Anna has a bag with 90 wafers. She eats 14 wafers on the first day. Every . . .Grade 11 Data Analysis

Bobby takes five tiles with the letters of his name and places them into a bag. . . .Grade 11 Data Analysis

Six standard dice are rolled and the numbers on the top faces are added . . .Grade 11 Data Analysis

Two princes and two princesses are ready to marry. Everybody independently . . .Grade 11 Data Analysis

The sum of N consecutive integer numbers is 2090. The smallest number is 101. . . .Grade 11 Data Analysis

I have eight dimes; five are real, and three are fake. Whenever a real dime is . . .Grade 11 Data Analysis

A team of three children, Anna, Bill and Cindy, independently answers . . .Grade 11 Data Analysis

Dueling Idiots Problem: three idiots participate in a duel. They shoot at the . . .Grade 11 Data Analysis

There are 10 girls and 10 boys in a class. A teacher randomly chooses two . . .Grade 11 Data Analysis

Two dice are thrown. You can see all 12 numbers except 2 faces that are on the . . .Grade 11 Data Analysis

A chip is placed at the bottom left corner square of a 5 x 5 grid. The chip is . . .Grade 11 Data Analysis

After a gun is fired in a saloon, 75% of the cowboys have a wounded ear, 80% . . .Grade 11 Data Analysis

If we set out by ranks of 10, we will be one short. We will also be one short . . .Grade 11 Data Analysis

It takes 2 cards to build 1 floor of a card house. It takes 7 cards to build . . .Grade 11 Data Analysis

Anna earned an average of 80% on her four exams. If she never earned more . . .Grade 11 Data Analysis

What is the average of the smaller of two random numbers from 0 to 1?Grade 11 Data Analysis

John answered 100 4-option multiple-choice questions. He is sure that he . . .Grade 11 Data Analysis

Forty non-zero positive numbers are written in a row. The average of the . . .Grade 11 Data Analysis

This picture shows the first five rows of Pascal's triangle. What is the sum . . .Grade 11 Data Analysis

San Jose Scrabblereg; Club No. 21 published a three-letter word list that . . .Grade 11 Data Analysis

In a city, there were seven bridges. There was a tradition to walk and cross . . .Grade 11 Data Analysis

An entrepreneur wants to hire the best person for a position. He makes a . . .Grade 11 Data Analysis

A group of kids with dogs go for a walk. There are 49 feet and heads . . .Grade 11 Data Analysis

Bob is rolling two dice and will subtract the second number from the first . . .Grade 11 Data Analysis

The average of twelve numbers is 8 and the average of another set of eight . . .Grade 11 Data Analysis

Fifteen numbers have an average of 10. Five of these numbers have an average . . .Grade 11 Data Analysis

The average (arithmetic mean) of a set of 10 different numbers is 98. If the . . .Grade 11 Data Analysis

Anna has 3 bags of marbles. The first contains 5 white marbles and 5 green marbles. The . . .Grade 11 Data Analysis

John has an average of 87 on his two math exams. To earn an A, he must have a . . .Grade 11 Data Analysis

I roll two dice. What is the probability that the two numbers are equal?Grade 11 Data Analysis

Everyone in tenth grade classes voted on a motion. Sixty percent of the girls . . .Grade 11 Data Analysis

Alex received a 60 on his essay and an 80 on his final. He got a 90 on class . . .Grade 11 Data Analysis

Gerry and Jane are younger than 25. The probability that two randomly chosen . . .Grade 11 Data Analysis

Jane and Gerry visit a casino. In one game, they have a 1/5 probability of . . .Grade 11 Data Analysis

John is sick 12 days per year. The probability of being sick on a Saturday or . . .Grade 11 Data Analysis

Abbey has a dog Abby. She places 5 tiles with the letters of her surname into . . .Grade 11 Data Analysis

John sent an email to his three partners. Everybody answered and copied the . . .Grade 11 Data Analysis

An average baby is about 20 inches (51 cm) long and weighs approximately 6 to 9 . . .Grade 11 Data Analysis

The binary numeral system represents numeric values using two symbols: 0 and 1. . . .Grade 11 Data Analysis

0 2 6 12 20 . . . What is the 100th number in the series?Grade 11 Data Analysis

If 2 salesmen can sell three luxury cars in 4 days, how many luxury cars can . . .Grade 11 Data Analysis

If you are a redhead you have more than the average amount of hair. This . . .Grade 11 Data Analysis

If the probability of an accident occurring in 4 years is 0.9999, what is the . . .Grade 11 Data Analysis

Find the sum of the series: 1/2 + 1/4 + 1/8 + 1/16 + . . . Grade 11 Data Analysis

Alex(A), Beatrice (B), and Craig (C) work on a project. (1) Together, A and . . .Grade 11 Data Analysis

I ask you to pick a number from 1 to 100. I then ask you, “Is the number . . .Grade 11 Data Analysis

Guesstimation A man can jump up to four times the length of his own body. . . .Grade 11 Data Analysis

Alex must match three different numbers chosen from the integers 1 to 33 in any . . .Grade 11 Data Analysis

In the United States, the average life span is 65 years and the average female . . .Grade 11 Data Analysis

What is the average of all positive integers less than 100 that are multiples . . .Grade 11 Data Analysis

Which year has had the greatest number of Roman numerals in it?Grade 11 Data Analysis

Which result ends in exactly seven zeroes. Remember: N! = 1 x 2 x . . . x N Grade 11 Data Analysis

After a test of a code, John detected 2 errors and Mary discovered 3 errors in . . .Grade 11 Data Analysis

John and Mary have equal chances of winning. What is more probable? Grade 11 Data Analysis

After a 20% discount and 8% tax, a set of tin solders costs $540. What was . . .Grade 11 Data Analysis

Every day, a stock price of $444 is either increased or decreased by 4%. When . . .Grade 11 Data Analysis

One bag contains two white marbles, another bag contains two black marbles, and . . .Grade 11 Data Analysis

A school offers the following dinner choices: First course: soup or small . . .Grade 11 Data Analysis

The average IQ of 100 students is 101. If the first ninety-nine students each . . .Grade 11 Data Analysis

Anna spent 120 Swiss francs in a Swiss souvenir shop. She was charged an extra . . .Grade 11 Data Analysis

What is the probability of getting blue?Grade 11 Data Analysis

What is the probability of not getting blue in two runs?Grade 11 Data Analysis

If the first President of the USA George Washington took office in 1789 and the . . .Grade 11 Data Analysis

Javier Sotomayor (Cuba) is the men's record holder with a jump of 2.45 m set . . .Grade 11 Data Analysis

Bob used to weigh 100kg. His new stressful job causes him to lose 10% every . . .Grade 11 Data Analysis

How many 9s are there in the result of the multiplication: 12345 x 99999 ? . . .Grade 11 Data Analysis

John's family tree includes 10 generations. What is the minimum number of . . .Grade 11 Data Analysis

A line containing 9 keyboard letters on Gerry's laptop does not work. If his . . .Grade 11 Data Analysis

Gerry estimates that two angles of a triangles have a measure between 50 and 70 . . .Grade 11 Data Analysis

What is the difference between 11 in decimal (normal) and binary systems? A . . .Grade 11 Data Analysis

What time is it 1234 minutes after 1:23 a.m.?Grade 11 Data Analysis

There are 800 students in a school. The students' average age is 12 years and . . .Grade 11 Data Analysis

How many times do you expect to get 5 if you throw a die 55 times?Grade 11 Data Analysis

If you toss a dime five times and it lands heads up three times, what are the . . .Grade 11 Data Analysis

2 + 2 = 11 In what numeral system is the expression true?Grade 11 Data Analysis

The masses of sugar and water in my 200 g tea cup are in the ratio 1 : 9. If . . .Grade 11 Data Analysis

Which of the following could be the percentage of even numbers among several . . .Grade 11 Data Analysis

What is the sum? 2001 + 2002 + . . . + 2099 Grade 11 Data Analysis

The cost of living increases uniformly by 44% in a period of two years. What . . .Grade 11 Data Analysis

If I roll two dice, what is the probability of rolling a six on at least one of . . .Grade 11 Data Analysis

You are rolling two dice and adding the numbers on the top faces. What sum . . .Grade 11 Data Analysis

What is the sum of the first 13 numbers that are evenly divisible by 13?Grade 11 Data Analysis

Gerry and Jane like to look at registration plates of cars that pass by. They . . .Grade 11 Data Analysis

If I put these balls in a bag and take two balls without looking, what is the . . .Grade 11 Data Analysis

I roll two dice, one with the left hand and one with the right. If the left . . .Grade 11 Data Analysis

**Buy 2 for the price of 3 and get 50% off!** What is the final rebate do . . .Grade 11 Data Analysis

The pie chart shows the number of men, women and kids in a county. What is . . .Grade 11 Data Analysis

Gerry tosses a coin and Jane tosses 2 coins. What is the probability that . . .Grade 11 Data Analysis

Martin has ten thousand dollars in a bank account. The interest rate for his . . .Grade 11 Data Analysis

Jane and Gerry compete in a best-of-three match. If Gerry plays so that his . . .Grade 11 Data Analysis

Cletus is absolutely, definitely, the worst student the driving school has ever . . .Grade 11 Data Analysis

In what numeral system is the phrase correct?**1 + 1 = 10**Grade 11 Data Analysis

Leslie Green asks: quot;In a large village community there are regularly women . . .Grade 11 Data Analysis

Jane has a 5-liter bucket with 5%-fat milk and 3-liter bucket with 3%-fat . . .Grade 11 Data Analysis

Anton, the highest IQ house ant on the planet, is taking his regular nocturnal . . .Grade 11 Logic

A recipe to make a cake for 66 people uses 3333 grams of sugar. How much . . .Grade 11 Logic

The price of a T-shirt on sale is $19.99. The store reduced the original . . .Grade 11 Logic

Tom drives for 3 days. On the second day he drives 2 km more than a quarter . . .Grade 11 Logic

Anna's income is seven-eighths that of Beatrice. Anna's expenses are . . .Grade 11 Logic

Anna wants to score exactly 33 points. The ducks give different points. How . . .Grade 11 Logic

The diagram shows some of the results of a six-person contest. There are two . . .Grade 11 Logic

Jane and Gerry are playing a card game. Without looking, a card is drawn from . . .Grade 11 Logic

Find the number evenly divisible by 2, 3, 4 and 5.Grade 11 Logic

How many times do the hour and the minute hands form a 90-degree angle in the . . .Grade 11 Logic

John read a 165-page book in 11 days. Every day, he read 1 page more than the . . .Grade 11 Logic

The left 11-tooth gear turns at 124 revolutions per minute. The middle gear . . .Grade 11 Logic

The first six numbers in a sequence are shown on the right. What is the 66th . . .Grade 11 Logic

A class of 44 students is divided into 4 groups. Each group contains at least . . .Grade 11 Logic

The number 99! is very big. How many zeros are there at the end of the . . .Grade 11 Logic

How many years ago did you have more than one thousand ancestors? Assume . . .Grade 11 Logic

What is the sum of 99 consecutive integers, if a third of them are negative . . .Grade 11 Logic

There is a set of 9 numbers: 1,2,3,4,5,6,7,8,9. Five numbers are selected from . . .Grade 11 Logic

I arrange five marbles randomly in a ring. There are two green and three . . .Grade 11 Logic

A girl was born in the 20th century. Take away from her year of birth the sum . . .Grade 11 Logic

The matchsticks make a spiral that goes clockwise. How many matchsticks do I . . .Grade 11 Logic

The figure shows a triangle made of discs. I want to move the discs and turn . . .Grade 11 Logic

Two rectangles enclose five regions. Find 2 figures that can form the . . .Grade 11 Logic

A password consists of five digits, 0-9. How many passwords are there that . . .Grade 11 Logic

Yellow Taxi Service charges $1.20 for the first mile and $.79 for each . . .Grade 11 Logic

An integer consists of 2010 digits such that any consecutive 10 digits are . . .Grade 11 Logic

Twelve couples met at a party. Each person shook the hand of each of the . . .Grade 11 Logic

There are 24 balls in the box. X of them are white. When we add 12 white . . .Grade 11 Logic

There are four brothers in a family. The sums of the ages of three of them are . . .Grade 11 Logic

Bill buys oranges at five for $1 and sells at one for $5. How many oranges . . .Grade 11 Logic

I have apples and paper boxes. If I place 8 apples into each box, I will have . . .Grade 11 Logic

What is the probability that the next person you meet is George Washington, the . . .Grade 11 Logic

It takes two painters 4 days to paint a house. The older painter would only . . .Grade 11 Logic

In how many ways can the name ALEX be spelt out, using adjacent letters of the . . .Grade 11 Logic

Find the missing figure.Grade 11 Logic

Which shape fits in the missing space to complete the pattern?Grade 11 Logic

I wrote all the numbers from 0 to 999. Which digit did I write less than the . . .Grade 11 Logic

Two apples and two peppers have the same weight as three eggs. Six eggs and . . .Grade 11 Logic

A group of gentlemen visited a produce shop. Each gentleman bought the same . . .Grade 11 Logic

I must balance any whole number load from 1kg to 40kg using these four weights . . .Grade 11 Logic

Based on 20 years per generation, estimate the number of ancestors John has in . . .Grade 11 Logic

A kitten has a 50/50 chance to be male or female. My cat just delivered two . . .Grade 11 Logic

I sold two cars and received sixty thousand dollars for each car. I received . . .Grade 11 Logic

What is the largest digit in the product of 11111111 x 11111111 ?Grade 11 Logic

Every year on my son's birthday, I put multiples of one thousand dollars in his . . .Grade 11 Logic

Sixty-five students want to share 15 melons. They decide that four boys will . . .Grade 11 Logic

How old is the eldest of these four sisters if the product of their ages is 792?Grade 11 Logic

Bill (B), Cindy (C), and Daniel (D) work on a project. (1) Together, B and C . . .Grade 11 Logic

Find the odd one out.Grade 11 Logic

A magician placed 3 bowls of fruit in 3 closed boxes and 10 people tried to . . .Grade 11 Logic

It takes exactly 1 hour to burn a rope when I light one of its ends. The rate . . .Grade 11 Logic

Logic puzzle: What number comes next after 66?Grade 11 Logic

Three identical glasses contain orange juice. The first one is 15% full, the . . .Grade 11 Logic

What is the sum of 101 consecutive positive integers if the middle one is n? Grade 11 Logic

Many people stand in a line (queue) to buy tickets to a match. There are . . .Grade 11 Logic

In the first week John made $1. He made 4 times more than the previous week if . . .Grade 11 Logic

How many two-digit integers are there in which the sum of the digits is equal . . .Grade 11 Logic

Twenty years ago, Bob was four times as old as Anna. Today, he is twice as old . . .Grade 11 Logic

Twelve European teams enter a football tournament. Each team plays one match . . .Grade 11 Logic

Anna traveled 3600 miles in a car. She had five tires and changed them such . . .Grade 11 Logic

On January 1st, Anna and Bill have $55 each. Each month Anna saves $5 more . . .Grade 11 Logic

Anna bought 1 slice of mushroom pizza and 2 slices of cheese pizza for a total . . .Grade 11 Logic

There are a number of apples, all of different weights. The 10 lightest apples . . .Grade 11 Logic

John has just had a 1% pay rise. He used to earn $5000 a month. He told his . . .Grade 11 Logic

Multiply all positive numbers below 33. How many zeros are there at the end . . .Grade 11 Logic

Logic puzzle: a secret door. A man approached the door of a secret . . .Grade 11 Logic

The figure shows a triangle made of discs. I want to move two discs and turn . . .Grade 11 Logic

What is half of two plus two minus two? How many possible answers are there . . .Grade 11 Logic

Logic riddle: In a house, there are three switches on the ground floor and a . . .Grade 11 Logic

What is the next number in the following sequence? 1 11 101 111 ?Grade 11 Logic

Anna, Beatrice, and Cindy run a 1000-meter race. All of them run at a . . .Grade 11 Logic

Brett, Cindy, and Daniel each launch a 100-day project. On day 100, Brett . . .Grade 11 Logic

At a party 60% of the boys are dancing with 90% of the girls. How many . . .Grade 11 Logic

There were nine knights in a kingdom and enough hay to feed their horses for . . .Grade 11 Logic

Find a sentence that is true.Grade 11 Logic

If you rearrange the letters NAMELESS, you would have the name of aGrade 11 Logic

I take half of the coconuts plus a coconut. What percentage of coconuts is . . .Grade 11 Logic

I want to measure exactly six minutes using only a five-minute hourglass and a . . .Grade 11 Logic

A series of 10 books were published at one-year intervals. The sum of the . . .Grade 11 Logic

How many "yes or no" questions are needed to guess any 3-digit lock code?Grade 11 Logic

Five pirates capture some treasure. They divide the coins and find that there . . .Grade 11 Logic

Find the number.Grade 11 Logic

What would you choose if you were hungry?Grade 11 Logic

There are four new projects in a company. The sums of the budgets of three of . . .Grade 11 Logic

A rich man is saving for a new car. He sets up an automatic transfer of $1000 . . .Grade 11 Logic

Three years ago there were 32 people in our company, and the ratio of men to . . .Grade 11 Logic

A 40-month long project is divided into three consecutive activities. The . . .Grade 11 Logic

A leading supplier left a solar plant project seven months after the project . . .Grade 11 Logic

In a test of 50 questions, the final score is calculated by subtracting three . . .Grade 11 Logic

Greg takes 100-point tests. He wants to achieve an average grade of at least . . .Grade 11 Logic

If I place a pair of brackets in to this number expression, what result can be . . .Grade 11 Logic

The theory of relativity connects the mass at high speed with initial mass, the . . .Grade 11 Logic

Gerry lives 50 miles away from Jane. He drives to Jane's house at 60 miles . . .Grade 11 Logic

A math test has 40 questions worth 100 points. The test consists of . . .Grade 11 Logic

What is the word coiled inside this circle?Grade 11 Logic

Gerry bought 3 oranges and 8 apples for $5. The next week he bought 8 oranges . . .Grade 11 Logic

Guess!Grade 11 Logic

Three positive whole numbers have the same answer added together or when . . .Grade 11 Logic

In a village, there are 100 families with either one child or none. This is a . . .Grade 11 Logic

We need 200 tons of such stones to pave a city square. How much stone do we . . .Grade 11 Logic

Find the odd one out.Grade 11 Logic

A grocery store lowered the price of coconuts from 49 cents to 48 cents. For . . .Grade 11 Logic

The product of two numbers is 119 and their difference is 10. What is the sum . . .Grade 11 Logic

A third of 8 is $4. Based on that proportion, what is one-fifth of 6?Grade 11 Logic

Zac's number is 5. Anna's number is 6. Bill’s number is 7. What is . . .Grade 11 Logic

300 plus 150 and 300 minus X is the same thing. What is X? Grade 11 Logic

When Pinocchio lies, his nose gets twice as long. When he tells the truth, his . . .Grade 11 Logic

What letter goes next? A E F H I K L M N Grade 11 Logic

In a room, there are 3 bosses, 2 wives, and a plumber. What is the least . . .Grade 11 Logic

Sammy the sea lion has spotted a gorgeous Lady sea lion before anyone else. She . . .Grade 11 Logic

A certain Professor of Statistics is trying to explain to his grandson that . . .Grade 11 Logic

Three observers, not more than 1km apart on flat windless terrain, report the . . .Grade 11 Logic

There are three goddesses named Mendax, Fidelis and Furtibus; one on your left, . . .Grade 11 Logic

One invention saves 20% on fuel; a second, 30%; and a third, 50%. If the . . .Grade 11 Logic

The ratio of women to men at a 100-employee company is 1 : 4. The company . . .Grade 11 Logic

On an European island, 18 are kids, 28 are divorced, 38 are married, and the . . .Grade 11 Logic

Leslie Green asks: Peter changes his old fashioned single 100W incandescent . . .Grade 11 Logic

A shopkeeper purchased 300 bulbs for $0.95 each. However, every . . .Grade 11 Logic

Leslie Green asks: quot;My neighbor Timmy has developed a complicated set of . . .Grade 11 Applied Math

At Wal-Mart, CDs cost $0.50 per disk, and pens cost $1.00 each. Which . . .Grade 11 Applied Math

A father wishes to divide a square piece of land among his five sons. He . . .Grade 11 Applied Math

John's dad pays him $8 for each correct answer he gives in his math homework . . .Grade 11 Applied Math

Bob is looking for a new job. He has three offers with the same starting . . .Grade 11 Applied Math

Bob will work 5 days. Which payment plan should he choose?Grade 11 Applied Math

A restaurant sells a 30 cm (in diameter) pizza for $9, while their large 40 cm . . .Grade 11 Applied Math

A real estate agent receives a 5% commission on the selling price of a house . . .Grade 11 Applied Math

The traveling salesman problem: a salesman has to visit eight towns and return . . .Grade 11 Applied Math

Blind people use a special method to read texts. The method was invented by . . .Grade 11 Applied Math

I use a room that is 7 x 11 to arrange five boxes. I would like to move the . . .Grade 11 Applied Math

I placed seven balls into a square box. Is it possible to rearrange the balls . . .Grade 11 Applied Math

Brad is framing a small flower box by four rectangular bricks. Each of the . . .Grade 11 Applied Math

Yesterday, I caught 30 fish of a certain size in a pond. I marked and . . .Grade 11 Applied Math

Estimate the area of the lake shown on the right.Grade 11 Applied Math

In a casino on a Sunday, 90% of the visitors lost $100 each, 9% of the . . .Grade 11 Applied Math

Several plumbers work on a pipeline installation, which 1 plumber is able to . . .Grade 11 Applied Math

John works on a 12-month project. Forty percent of the first 3-month activity . . .Grade 11 Applied Math

A project manager needs a car 3 days per week. The daily cost of car renting . . .Grade 11 Applied Math

The average hourly wages of men and women in company A are $21 and $16, . . .Grade 11 Applied Math

In an investment club, 90% of the members bought stock in company A, 80% . . .Grade 11 Applied Math

If 9 workers can build 9 houses in 9 months, then how many months would it . . .Grade 11 Applied Math

Jim sells 60 percent of pineapples he had and throws away 10 percent of the . . .Grade 11 Applied Math

A space rocket has a critical fuel system, protected by 4 independent safety . . .Grade 11 Applied Math

A city hall floor is to be tiled in the following pattern. The hall measures . . .Grade 11 Applied Math

It costs $24 to paint a cube. Before painting, it was cut in four pieces by . . .Grade 11 Applied Math

A full box with 70 matches weighs the same as four boxes with 10 matches each. . . .Grade 11 Applied Math

If 5% of the people get 95% of the total salary paid in a county, and the . . .Grade 11 Applied Math

Anna can complete a project in 40 days. Bill can complete the project in 50 . . .Grade 11 Applied Math

I want to construct a solid brick from wooden cubes. Its side ratio is 1 : 2 . . .Grade 11 Applied Math

There are 8 people in a village. They consume 8 coconuts altogether. Each . . .Grade 11 Applied Math

Inspired by Morozkin's problem : Two children started at 6:00 and each . . .Grade 11 Applied Math

Anna and Bill roll a six-sided die. The first person to roll a six wins. Anna . . .Grade 11 Applied Math

The picture shows the rectangular floor plan of the first level of a house. . . .Grade 11 Applied Math

I am placing round beads: 1 blue and 1 red; then 2 blue and 2 red; then 3 blue . . .Grade 11 Applied Math

The rear tires of my car wear out after 60,000 miles, whilst the front tires . . .Grade 11 Applied Math

80% of the women in company A are under 25 years old, 40% of the men in the . . .Grade 11 Applied Math

If Mark had driven at 6 miles per hour (mph) faster than the state speed limit . . .Grade 11 Applied Math

Since the day he was born, Bill's parents have put $1000 in his bank account . . .Grade 11 Applied Math

John sees the reflection of the treetop in a mirror. Find the height of the . . .Grade 11 Applied Math

In selling stock, John made a profit of 19% of the amount originally paid for . . .Grade 11 Applied Math

The size of an NBA basketball court is about 29 by 16 meters. How many . . .Grade 11 Applied Math

Find X.Grade 11 Applied Math

The population density of the Italian capital Rome is about 2,000 people per . . .Grade 11 Applied Math

Each week, Mrs. Smith gives her students as many worksheets as their age. For . . .Grade 11 Applied Math

Jane pedaled downhill at 20 km/h (kilometers per hour) and it took 2 hours to . . .Grade 11 Applied Math

If a real estate agent received $60,000 as a 5% commission on the selling price . . .Grade 11 Applied Math

How much paint do you need to paint the pyramid if you need 1kg for 1 square . . .Grade 11 Applied Math

A district sends, on average, a total of 200 million gallons of water each . . .Grade 11 Applied Math

Gerry was born at 11:55 P.M. on December 31, 2000. Jane was born 6 minutes . . .Grade 11 Applied Math

Steve says that he will be X years old in year X^{2}. What will be . . .Grade 11 Applied Math

Anna (A), Bill (B), Cindy (C), and Daniel (D) work on a project. (1) . . .Grade 11 Applied Math

The picture shows a composite structure under stress. Estimate the percentage . . .Grade 11 Applied Math

*Computer Update Problem * suggested by Leslie Green I spot a computer . . .Grade 11 Applied Math

A plastic ruler is much easier to bend in one direction than another according . . .Grade 11 Applied Math

Leslie Green asks: Income tax is a strange concept when inflation is taken . . .Grade 11 Applied Math

Leslie Green, Oxfordshire, UK, asks: quot;My neighbor a famous Professor of . . .Grade 11 Applied Math

Bob worked for 45 years. He did not work on weekends, had a 3-week summer . . .Grade 11 Applied Math

There are two gods named Mendax and Fidelis, one on your left, the other on . . .Grade 11 Applied Math

An elephant weighing 2 tonnes (2 metric tons) and a rabbit weighing 1kg are . . .Grade 11 Applied Math

If $1 equals 0.9 Euros, $1 equals 1.02 Swiss francs, and 1 euro equals 9.5 . . .Grade 11 Applied Math

The ratio of women to men at a 100-employee company is 1 : 4. The company . . .Grade 11 Applied Math

Sasha is learning about Archimedes at school. His show-off sister is 3 years . . .Grade 11 Applied Math

The largest denomination of currency ever printed by the Bureau of Engraving . . .Grade 11 Applied Math

Leslie Green asks: Engineers need to use quantities which can vary over at . . .## HOME

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The speed of light is 3 x 10

The North American emergency telephone number is 911. How many three-digit . . .Grade 11 Numbers and Arithmetic

Choose the answer without using a calculator. Which number is evenly . . .Grade 11 Numbers and Arithmetic

How many sets of at least two consecutive positive integers have a sum of 15?Grade 11 Numbers and Arithmetic

What is the sum of all the digits (not numbers) in the sequence 1, 2, 3, 4, . . . . .Grade 11 Numbers and Arithmetic

How many three-digit numbers which are multiples of 7 end with the digit 4?Grade 11 Numbers and Arithmetic

The date July 31, 1370 in MM/DD/YYYY format is a palindrome that may be read . . .Grade 11 Numbers and Arithmetic

We use the decimal number system with base 10. The binary numeral system . . .Grade 11 Numbers and Arithmetic

How many two-digit numbers have exactly five divisors including 1 and . . .Grade 11 Numbers and Arithmetic

Make 33 by using three 3s and any math operators. How many times do you use . . .Grade 11 Numbers and Arithmetic

The sum of two prime numbers is equal to 888. There are several options. We . . .Grade 11 Numbers and Arithmetic

The last digit of the number 9

The typical healthy resting heart rate in adults is 60–80 beats per minute. . . .Grade 11 Numbers and Arithmetic

Pairs of primes separated by a single number are called prime pairs. Examples . . .Grade 11 Numbers and Arithmetic

Find the last 3 digits of the sum of 1 + 11 + 111 + . . . + 111 . . . 111, . . .Grade 11 Numbers and Arithmetic

A number is palindromic, if it is the same backwards as forwards. Of the . . .Grade 11 Numbers and Arithmetic

If you sum all the numbers between 1 and 11111, what number is the result? By . . .Grade 11 Numbers and Arithmetic

Which is not correct? Remember that 3! = 1 x 2 x 3Grade 11 Numbers and Arithmetic

You can throw an unlimited number of darts at the dartboard. Some total . . .Grade 11 Numbers and Arithmetic

How many sets of three consecutive integers whose product is equal to their sum . . .Grade 11 Numbers and Arithmetic

If the sum of three distinct positive integers is 33, what is the maximum . . .Grade 11 Numbers and Arithmetic

The product of two integers is 1000. Neither of the numbers contains a zero. . . .Grade 11 Numbers and Arithmetic

What is a mystery number if you add it to 1, then multiply by 2, then add 3, . . .Grade 11 Numbers and Arithmetic

The product of 99 integers is 99. What is the largest possible value the sum . . .Grade 11 Numbers and Arithmetic

What is the smallest number greater than 2000 that is evenly divisible by all . . .Grade 11 Numbers and Arithmetic

How many digits are in the number 20

What is the smallest 7-digit prime number? A prime number is a natural number . . .Grade 11 Numbers and Arithmetic

Leslie Green asks: Find the ratio A/B where A is the number of elements in . . .Grade 11 Numbers and Arithmetic

As n goes to infinity, what is the limit of n / (n-1)?Grade 11 Numbers and Arithmetic

The product of real positive numbers a, b, c, and d is equal to 1. What is . . .Grade 11 Numbers and Arithmetic

The sum of the digits of a four-digit number is 15. All the digits are . . .Grade 11 Numbers and Arithmetic

Find the sum of the digits of the first 100 positive integers: 1 + 2 + 3 + . . .Grade 11 Algebra

Simplify the expression 12(3 + x) – 4(5x – 6).Grade 11 Algebra

In the equation y = 9x

SimplifyGrade 11 Algebra

What transformation creates an image with a vertex at the origin?Grade 11 Algebra

What relation goes through points A, B and C?Grade 11 Algebra

Which point would be on a line passing through C and perpendicular to the line . . .Grade 11 Algebra

Between what two whole numbers does the result lie?Grade 11 Algebra

Which of the following green areas best represents the graph of the inequality y < . . .Grade 11 Algebra

Which of the following graphs represents all values of x such that Grade 11 Algebra

The last digit of the number 3

Which of the following could be a value of x?Grade 11 Algebra

A perfect cube is an integer whose cube root is an integer. For example, 64 . . .Grade 11 Algebra

2 + 2 = 5 Find an error in the proof.Grade 11 Algebra

Find the expression that is INCORRECT.Grade 11 Algebra

Find the expression that is INCORRECT.Grade 11 Algebra

Find the value of F, if a = 0.2.Grade 11 Algebra

Eugenia used 192 digits to number the pages in her diary. How many pages . . .Grade 11 Algebra

Which of the following gives the largest value?Grade 11 Algebra

Do these rays have one point of intersection? If yes, find the x-coordinate . . .Grade 11 Algebra

What is the largest product of positive integers that add up to 17?Grade 11 Algebra

Identify the location of point E after the transformation (x

How much does the maximum value of 2 - 2sin(x) exceed the maximum value of . . .Grade 11 Algebra

Which point is on the axis of symmetry of the graph of the parabola? Grade 11 Algebra

Xia and Yvonne collect buttons. Xia only collects the ones with two holes and . . .Grade 11 Algebra

Nine teams enter a basketball tournament. Each team plays one match against . . .Grade 11 Algebra

A frog ate 20 flies in a day. Each day, the frog ate 20 more than on the day . . .Grade 11 Algebra

If the admittance rate to a prestigious university is 7.5% and 810 students . . .Grade 11 Algebra

Mr. Rapid always starts driving on a motorway at exactly 7:00 a.m. If he . . .Grade 11 Algebra

In a city, three-quarters of the men are married to four-fifths of the women. . . .Grade 11 Algebra

Mr. Rapid always starts driving on a road at exactly 7:00 a.m. If he drives on . . .Grade 11 Algebra

There are N students in a class and only 8 of them are girls. If 11 boys . . .Grade 11 Algebra

The rear tires of my car wear out after 40,000 miles, whilst the front tires . . .Grade 11 Algebra

X

Ben ate 100 bananas between Monday and Friday, stopping for the weekend. . . .Grade 11 Algebra

Which gives the smallest answer if X and Y are integers, X is greater than . . .Grade 11 Algebra

On an island, the ratio between the number of adult men and the number of adult . . .Grade 11 Algebra

Which number could be written as a sum of 4 consecutive numbers?Grade 11 Algebra

Figure out without using a calculator which product is greater:Grade 11 Algebra

It takes two gardeners 6 days to mow a lawn. One is lazy and one is . . .Grade 11 Algebra

Derek dragon became a vegetarian two years ago. Derek likes to eat 3 baskets . . .Grade 11 Algebra

Find the ratio of the green and blue areas

Which of the following gives the largest answer?Grade 11 Algebra

I participate in a 10-day rally. The rear tires of my car wear out after 4,000 . . .Grade 11 Algebra

Two trains start at the same time, one from Zurich to Lausanne, the other from . . .Grade 11 Geometry

A rectangle has a width of 0.3x and a length of 0.4x. Which formula is the . . .Grade 11 Geometry

Which gives the largest answer?Grade 11 Geometry

The edges of a large cube are 3 times longer than the edges of a small cube. . . .Grade 11 Geometry

An arrow rotates 366° in one second. How many revolutions does it make in . . .Grade 11 Geometry

Two satellites orbit at 1/4 R above Earth's surface. R is the radius of the . . .Grade 11 Geometry

A mathematician wants to approximate the width of a lake. He places 5 markers . . .Grade 11 Geometry

What transformation creates an image with a vertex at the origin?Grade 11 Geometry

What is the area of the colored shape?Grade 11 Geometry

Angles A and C are equal to 90

Each interior angle of a regular polygon measures 144

A square garden is 401 square meters. The minimum distance between apple . . .Grade 11 Geometry

If the Earth's radius is twice the radius of planet M, then how much bigger is . . .Grade 11 Geometry

A boy is making boxes from cardboard. He is going to cut square pieces off . . .Grade 11 Geometry

Alex wants to arrange the cylinders from least to greatest volume. What is . . .Grade 11 Geometry

Which shape would be made if the two sections were fitted together?Grade 11 Geometry

Five boys Andrew, Brandon, Chris, Daniel, and Ethan live on State Street. At . . .Grade 11 Geometry

A boy cuts a cardboard circle and only cuts 5 straight lines. He does not . . .Grade 11 Geometry

How many planes of symmetry does a cube have?Grade 11 Geometry

How many boxes measuring 0.1m x 0.1m x 6.9m can be packed into a container . . .Grade 11 Geometry

The figure shows a pyramid made of small squares. I want to move the small . . .Grade 11 Geometry

The American flag consists of thirteen equally spaced, horizontal red and white . . .Grade 11 Geometry

The figure shows a regular pentagon. Compare the values of angles A and B.Grade 11 Geometry

Divide the analog watch face with two straight lines so that the sums of the . . .Grade 11 Geometry

Look at the mini-golf course. To what point would the player hit the golf . . .Grade 11 Geometry

How many interior right angles are possible in a polygon with seven sides? Grade 11 Geometry

Bill mows the front lawn, which is a 7m by 10m rectangle. The mower cuts a 1m . . .Grade 11 Geometry

Among the following shapes of equal area, which has the largest perimeter? Grade 11 Geometry

A block of wood in the form of a cuboid 9 x 10 x 11 has all its six faces . . .Grade 11 Geometry

I fold a square piece of paper in half four times without unfolding, making an . . .Grade 11 Geometry

How many squares can be formed by joining four of these points on the . . .Grade 11 Geometry

If I tile a floor with 3000 regular hexagonal tiles as shown here how many . . .Grade 11 Geometry

Path C consists of straight segments. Path D and E consist of semi-circles. . . .Grade 11 Geometry

A circle is drawn through two vertices of a square so that it is tangent to . . .Grade 11 Geometry

I placed together four identical triangles and the square, without overlaps, to . . .Grade 11 Geometry

Compare areas F and G Grade 11 Geometry

What is the sum of the marked angles?Grade 11 Geometry

Eight points are equally spaced on a circle. How many right angled triangles . . .Grade 11 Geometry

The picture shows six equilateral triangles. The sides of the triangles are . . .Grade 11 Geometry

The picture shows a tiling pattern which is made of square green tiles 10 x 10 . . .Grade 11 Geometry

Fifteen billiard balls perfectly fit into a triangular rack. What is the . . .Grade 11 Geometry

What is the smallest number of segments that needs to be moved so that the . . .Grade 11 Geometry

All three circles are tangent to the horizontal line and to one another. The . . .Grade 11 Geometry

A girl wants to cut the paper into several equal pieces of the same shape, and . . .Grade 11 Geometry

Two lines and two diagonals are drawn through the center of the rectangle. . . .Grade 11 Geometry

How many circles are needed to separate each star from all of the others?Grade 11 Geometry

I would like to cut the shape into the fewest possible pieces that will fit . . .Grade 11 Geometry

The colored figure in the picture consists of isosceles right triangles. . . .Grade 11 Geometry

The vertices of the smaller square divide each side of the larger square by a . . .Grade 11 Geometry

I blew some air into a spherical balloon and quadrupled its surface area (4 . . .Grade 11 Geometry

Estimate the area of the largest equilateral triangle that can fit within a 1x1 . . .Grade 11 Geometry

Four matchsticks form a square. How many non-overlapping squares can be . . .Grade 11 Geometry

Guesstimation. How many tennis balls can fit in a school bus?Grade 11 Geometry

What is the maximum number of apples (ideal spherical units) that can touch . . .Grade 11 Geometry

I arranged twelve one-inch wooden sticks in a polygon with an area of 6 square . . .Grade 11 Geometry

Which reservoir has the smallest volume? Grade 11 Geometry

Anna has made puzzle pieces by cutting wedges from a disk. Each wedge cut from . . .Grade 11 Geometry

How many coins do I need to melt down and recast to get a single coin of double . . .Grade 11 Geometry

Shape A and B are congruent equilateral triangles. Shape C is formed by . . .Grade 11 Geometry

The diagram illustrates a row of three squares formed by matches. How many . . .Grade 11 Geometry

A boy stacked colored cubes in a square pyramid like the one shown here. The . . .Grade 11 Geometry

The figure shows a red equilateral triangle inscribed within another . . .Grade 11 Geometry

The three circles have fixed centers, and the diameter of a circle is 7 / 8 of . . .Grade 11 Geometry

For this rectangular solid, which plane(s) contain(s) C and is/are parallel to . . .Grade 11 Geometry

Two similar pyramids have volumes of 343 m

Among the following shapes of equal perimeter, which has the smallest area? Grade 11 Geometry

Which triangle with sides a, b, and c has the largest area?Grade 11 Geometry

Squares 1, 2 and 3 have sides of length 1, 2 and 3 units, respectively. What . . .Grade 11 Geometry

A square with a side length 20 has two vertices on the circle, and one side . . .Grade 11 Geometry

Two squares, each with sides measuring 2 cm, are placed such that a vertex of . . .Grade 11 Geometry

A recipe makes 5 pizzas that are 12 inches in diameter. If I decide to make . . .Grade 11 Geometry

Two congruent circles share a radius. What is the perimeter of the figure . . .Grade 11 Geometry

What is the area of a garden? Grade 11 Geometry

The large and small circles touch each other. What part of the large circle . . .Grade 11 Geometry

Estimate how long the rope is if its diameter is 1 cm.Grade 11 Geometry

Find the ratio of the areas of the large and small squares.Grade 11 Geometry

What is the largest possible side size of an equilateral triangle that fits . . .Grade 11 Geometry

The hypotenuse of a right triangle is 6, and the length of one leg is 2 units . . .Grade 11 Geometry

What part of the rectangle is red if points A and B are the midpoints of the . . .Grade 11 Geometry

How many lines can be drawn in a plane so that they are equidistant from 3 . . .Grade 11 Geometry

Three overlapping squares form 5 squares including themselves in the picture. . . .Grade 11 Geometry

You have a 5kg weight and a 12kg weight. They are the same height and are . . .Grade 11 Geometry

Estimate the maximum number of smaller 1-inch circles that fit in a larger . . .Grade 11 Geometry

What is the volume in cubic inches of the pyramid with height 10 inches? The . . .Grade 11 Geometry

I want to divide this shape into four congruent pieces - all of precisely the . . .Grade 11 Geometry

Which pyramid has the largest volume?Grade 11 Geometry

Find the area of the colored rectangle.Grade 11 Geometry

Which line goes through the center of the circle?Grade 11 Geometry

All sides of the white cross are the same. What percentage of the square is . . .Grade 11 Geometry

What is the sum of the interior angles B and D of the pentagon if three other . . .Grade 11 Geometry

If I picked three red points, each in the middle of a different side of the big . . .Grade 11 Geometry

A large rectangle of perimeter 44 is divided into 10 congruent rectangles. . . .Grade 11 Data Analysis

Five percent of the marbles in a jar are black. One fourth of the marbles . . .Grade 11 Data Analysis

A bag contains 6 green, 5 gray, and 4 violet disks. If 2 disks are drawn at . . .Grade 11 Data Analysis

If two dice are rolled 72 times, how many times is the sum of the two top . . .Grade 11 Data Analysis

A city hall contains 165 chairs. The first row has 10 chairs. Each additional . . .Grade 11 Data Analysis

Which number could be removed from the set without changing the average . . .Grade 11 Data Analysis

The first person is 100 cm tall. Each next person is 20% taller than the . . .Grade 11 Data Analysis

Five students put their sandwiches into five paper bags. The bags are . . .Grade 11 Data Analysis

Four kinds of apples are combined in a box. I select apples from the box . . .Grade 11 Data Analysis

Alex received a 70 on his essay and a 90 on his final. He got an 80 on class . . .Grade 11 Data Analysis

Statistics show that for every 100 babies born in Funny Town, there are 10 more . . .Grade 11 Data Analysis

John arrives at crossroads A from the North. He makes four moves each time . . .Grade 11 Data Analysis

99 numbers have an average of 101. Ninety of these numbers have an average of . . .Grade 11 Data Analysis

The average of a set of 12 numbers is 1. If 18, 50 and -20 are added to the . . .Grade 11 Data Analysis

Anna has a bag with 90 wafers. She eats 14 wafers on the first day. Every . . .Grade 11 Data Analysis

Bobby takes five tiles with the letters of his name and places them into a bag. . . .Grade 11 Data Analysis

Six standard dice are rolled and the numbers on the top faces are added . . .Grade 11 Data Analysis

Two princes and two princesses are ready to marry. Everybody independently . . .Grade 11 Data Analysis

The sum of N consecutive integer numbers is 2090. The smallest number is 101. . . .Grade 11 Data Analysis

I have eight dimes; five are real, and three are fake. Whenever a real dime is . . .Grade 11 Data Analysis

A team of three children, Anna, Bill and Cindy, independently answers . . .Grade 11 Data Analysis

Dueling Idiots Problem: three idiots participate in a duel. They shoot at the . . .Grade 11 Data Analysis

There are 10 girls and 10 boys in a class. A teacher randomly chooses two . . .Grade 11 Data Analysis

Two dice are thrown. You can see all 12 numbers except 2 faces that are on the . . .Grade 11 Data Analysis

A chip is placed at the bottom left corner square of a 5 x 5 grid. The chip is . . .Grade 11 Data Analysis

After a gun is fired in a saloon, 75% of the cowboys have a wounded ear, 80% . . .Grade 11 Data Analysis

If we set out by ranks of 10, we will be one short. We will also be one short . . .Grade 11 Data Analysis

It takes 2 cards to build 1 floor of a card house. It takes 7 cards to build . . .Grade 11 Data Analysis

Anna earned an average of 80% on her four exams. If she never earned more . . .Grade 11 Data Analysis

What is the average of the smaller of two random numbers from 0 to 1?Grade 11 Data Analysis

John answered 100 4-option multiple-choice questions. He is sure that he . . .Grade 11 Data Analysis

Forty non-zero positive numbers are written in a row. The average of the . . .Grade 11 Data Analysis

This picture shows the first five rows of Pascal's triangle. What is the sum . . .Grade 11 Data Analysis

San Jose Scrabblereg; Club No. 21 published a three-letter word list that . . .Grade 11 Data Analysis

In a city, there were seven bridges. There was a tradition to walk and cross . . .Grade 11 Data Analysis

An entrepreneur wants to hire the best person for a position. He makes a . . .Grade 11 Data Analysis

A group of kids with dogs go for a walk. There are 49 feet and heads . . .Grade 11 Data Analysis

Bob is rolling two dice and will subtract the second number from the first . . .Grade 11 Data Analysis

The average of twelve numbers is 8 and the average of another set of eight . . .Grade 11 Data Analysis

Fifteen numbers have an average of 10. Five of these numbers have an average . . .Grade 11 Data Analysis

The average (arithmetic mean) of a set of 10 different numbers is 98. If the . . .Grade 11 Data Analysis

Anna has 3 bags of marbles. The first contains 5 white marbles and 5 green marbles. The . . .Grade 11 Data Analysis

John has an average of 87 on his two math exams. To earn an A, he must have a . . .Grade 11 Data Analysis

I roll two dice. What is the probability that the two numbers are equal?Grade 11 Data Analysis

Everyone in tenth grade classes voted on a motion. Sixty percent of the girls . . .Grade 11 Data Analysis

Alex received a 60 on his essay and an 80 on his final. He got a 90 on class . . .Grade 11 Data Analysis

Gerry and Jane are younger than 25. The probability that two randomly chosen . . .Grade 11 Data Analysis

Jane and Gerry visit a casino. In one game, they have a 1/5 probability of . . .Grade 11 Data Analysis

John is sick 12 days per year. The probability of being sick on a Saturday or . . .Grade 11 Data Analysis

Abbey has a dog Abby. She places 5 tiles with the letters of her surname into . . .Grade 11 Data Analysis

John sent an email to his three partners. Everybody answered and copied the . . .Grade 11 Data Analysis

An average baby is about 20 inches (51 cm) long and weighs approximately 6 to 9 . . .Grade 11 Data Analysis

The binary numeral system represents numeric values using two symbols: 0 and 1. . . .Grade 11 Data Analysis

0 2 6 12 20 . . . What is the 100th number in the series?Grade 11 Data Analysis

If 2 salesmen can sell three luxury cars in 4 days, how many luxury cars can . . .Grade 11 Data Analysis

If you are a redhead you have more than the average amount of hair. This . . .Grade 11 Data Analysis

If the probability of an accident occurring in 4 years is 0.9999, what is the . . .Grade 11 Data Analysis

Find the sum of the series: 1/2 + 1/4 + 1/8 + 1/16 + . . . Grade 11 Data Analysis

Alex(A), Beatrice (B), and Craig (C) work on a project. (1) Together, A and . . .Grade 11 Data Analysis

I ask you to pick a number from 1 to 100. I then ask you, “Is the number . . .Grade 11 Data Analysis

Guesstimation A man can jump up to four times the length of his own body. . . .Grade 11 Data Analysis

Alex must match three different numbers chosen from the integers 1 to 33 in any . . .Grade 11 Data Analysis

In the United States, the average life span is 65 years and the average female . . .Grade 11 Data Analysis

What is the average of all positive integers less than 100 that are multiples . . .Grade 11 Data Analysis

Which year has had the greatest number of Roman numerals in it?Grade 11 Data Analysis

Which result ends in exactly seven zeroes. Remember: N! = 1 x 2 x . . . x N Grade 11 Data Analysis

After a test of a code, John detected 2 errors and Mary discovered 3 errors in . . .Grade 11 Data Analysis

John and Mary have equal chances of winning. What is more probable? Grade 11 Data Analysis

After a 20% discount and 8% tax, a set of tin solders costs $540. What was . . .Grade 11 Data Analysis

Every day, a stock price of $444 is either increased or decreased by 4%. When . . .Grade 11 Data Analysis

One bag contains two white marbles, another bag contains two black marbles, and . . .Grade 11 Data Analysis

A school offers the following dinner choices: First course: soup or small . . .Grade 11 Data Analysis

The average IQ of 100 students is 101. If the first ninety-nine students each . . .Grade 11 Data Analysis

Anna spent 120 Swiss francs in a Swiss souvenir shop. She was charged an extra . . .Grade 11 Data Analysis

What is the probability of getting blue?Grade 11 Data Analysis

What is the probability of not getting blue in two runs?Grade 11 Data Analysis

If the first President of the USA George Washington took office in 1789 and the . . .Grade 11 Data Analysis

Javier Sotomayor (Cuba) is the men's record holder with a jump of 2.45 m set . . .Grade 11 Data Analysis

Bob used to weigh 100kg. His new stressful job causes him to lose 10% every . . .Grade 11 Data Analysis

How many 9s are there in the result of the multiplication: 12345 x 99999 ? . . .Grade 11 Data Analysis

John's family tree includes 10 generations. What is the minimum number of . . .Grade 11 Data Analysis

A line containing 9 keyboard letters on Gerry's laptop does not work. If his . . .Grade 11 Data Analysis

Gerry estimates that two angles of a triangles have a measure between 50 and 70 . . .Grade 11 Data Analysis

What is the difference between 11 in decimal (normal) and binary systems? A . . .Grade 11 Data Analysis

What time is it 1234 minutes after 1:23 a.m.?Grade 11 Data Analysis

There are 800 students in a school. The students' average age is 12 years and . . .Grade 11 Data Analysis

How many times do you expect to get 5 if you throw a die 55 times?Grade 11 Data Analysis

If you toss a dime five times and it lands heads up three times, what are the . . .Grade 11 Data Analysis

2 + 2 = 11 In what numeral system is the expression true?Grade 11 Data Analysis

The masses of sugar and water in my 200 g tea cup are in the ratio 1 : 9. If . . .Grade 11 Data Analysis

Which of the following could be the percentage of even numbers among several . . .Grade 11 Data Analysis

What is the sum? 2001 + 2002 + . . . + 2099 Grade 11 Data Analysis

The cost of living increases uniformly by 44% in a period of two years. What . . .Grade 11 Data Analysis

If I roll two dice, what is the probability of rolling a six on at least one of . . .Grade 11 Data Analysis

You are rolling two dice and adding the numbers on the top faces. What sum . . .Grade 11 Data Analysis

What is the sum of the first 13 numbers that are evenly divisible by 13?Grade 11 Data Analysis

Gerry and Jane like to look at registration plates of cars that pass by. They . . .Grade 11 Data Analysis

If I put these balls in a bag and take two balls without looking, what is the . . .Grade 11 Data Analysis

I roll two dice, one with the left hand and one with the right. If the left . . .Grade 11 Data Analysis

The pie chart shows the number of men, women and kids in a county. What is . . .Grade 11 Data Analysis

Gerry tosses a coin and Jane tosses 2 coins. What is the probability that . . .Grade 11 Data Analysis

Martin has ten thousand dollars in a bank account. The interest rate for his . . .Grade 11 Data Analysis

Jane and Gerry compete in a best-of-three match. If Gerry plays so that his . . .Grade 11 Data Analysis

Cletus is absolutely, definitely, the worst student the driving school has ever . . .Grade 11 Data Analysis

In what numeral system is the phrase correct?

Leslie Green asks: quot;In a large village community there are regularly women . . .Grade 11 Data Analysis

Jane has a 5-liter bucket with 5%-fat milk and 3-liter bucket with 3%-fat . . .Grade 11 Data Analysis

Anton, the highest IQ house ant on the planet, is taking his regular nocturnal . . .Grade 11 Logic

A recipe to make a cake for 66 people uses 3333 grams of sugar. How much . . .Grade 11 Logic

The price of a T-shirt on sale is $19.99. The store reduced the original . . .Grade 11 Logic

Tom drives for 3 days. On the second day he drives 2 km more than a quarter . . .Grade 11 Logic

Anna's income is seven-eighths that of Beatrice. Anna's expenses are . . .Grade 11 Logic

Anna wants to score exactly 33 points. The ducks give different points. How . . .Grade 11 Logic

The diagram shows some of the results of a six-person contest. There are two . . .Grade 11 Logic

Jane and Gerry are playing a card game. Without looking, a card is drawn from . . .Grade 11 Logic

Find the number evenly divisible by 2, 3, 4 and 5.Grade 11 Logic

How many times do the hour and the minute hands form a 90-degree angle in the . . .Grade 11 Logic

John read a 165-page book in 11 days. Every day, he read 1 page more than the . . .Grade 11 Logic

The left 11-tooth gear turns at 124 revolutions per minute. The middle gear . . .Grade 11 Logic

The first six numbers in a sequence are shown on the right. What is the 66th . . .Grade 11 Logic

A class of 44 students is divided into 4 groups. Each group contains at least . . .Grade 11 Logic

The number 99! is very big. How many zeros are there at the end of the . . .Grade 11 Logic

How many years ago did you have more than one thousand ancestors? Assume . . .Grade 11 Logic

What is the sum of 99 consecutive integers, if a third of them are negative . . .Grade 11 Logic

There is a set of 9 numbers: 1,2,3,4,5,6,7,8,9. Five numbers are selected from . . .Grade 11 Logic

I arrange five marbles randomly in a ring. There are two green and three . . .Grade 11 Logic

A girl was born in the 20th century. Take away from her year of birth the sum . . .Grade 11 Logic

The matchsticks make a spiral that goes clockwise. How many matchsticks do I . . .Grade 11 Logic

The figure shows a triangle made of discs. I want to move the discs and turn . . .Grade 11 Logic

Two rectangles enclose five regions. Find 2 figures that can form the . . .Grade 11 Logic

A password consists of five digits, 0-9. How many passwords are there that . . .Grade 11 Logic

Yellow Taxi Service charges $1.20 for the first mile and $.79 for each . . .Grade 11 Logic

An integer consists of 2010 digits such that any consecutive 10 digits are . . .Grade 11 Logic

Twelve couples met at a party. Each person shook the hand of each of the . . .Grade 11 Logic

There are 24 balls in the box. X of them are white. When we add 12 white . . .Grade 11 Logic

There are four brothers in a family. The sums of the ages of three of them are . . .Grade 11 Logic

Bill buys oranges at five for $1 and sells at one for $5. How many oranges . . .Grade 11 Logic

I have apples and paper boxes. If I place 8 apples into each box, I will have . . .Grade 11 Logic

What is the probability that the next person you meet is George Washington, the . . .Grade 11 Logic

It takes two painters 4 days to paint a house. The older painter would only . . .Grade 11 Logic

In how many ways can the name ALEX be spelt out, using adjacent letters of the . . .Grade 11 Logic

Find the missing figure.Grade 11 Logic

Which shape fits in the missing space to complete the pattern?Grade 11 Logic

I wrote all the numbers from 0 to 999. Which digit did I write less than the . . .Grade 11 Logic

Two apples and two peppers have the same weight as three eggs. Six eggs and . . .Grade 11 Logic

A group of gentlemen visited a produce shop. Each gentleman bought the same . . .Grade 11 Logic

I must balance any whole number load from 1kg to 40kg using these four weights . . .Grade 11 Logic

Based on 20 years per generation, estimate the number of ancestors John has in . . .Grade 11 Logic

A kitten has a 50/50 chance to be male or female. My cat just delivered two . . .Grade 11 Logic

I sold two cars and received sixty thousand dollars for each car. I received . . .Grade 11 Logic

What is the largest digit in the product of 11111111 x 11111111 ?Grade 11 Logic

Every year on my son's birthday, I put multiples of one thousand dollars in his . . .Grade 11 Logic

Sixty-five students want to share 15 melons. They decide that four boys will . . .Grade 11 Logic

How old is the eldest of these four sisters if the product of their ages is 792?Grade 11 Logic

Bill (B), Cindy (C), and Daniel (D) work on a project. (1) Together, B and C . . .Grade 11 Logic

Find the odd one out.Grade 11 Logic

A magician placed 3 bowls of fruit in 3 closed boxes and 10 people tried to . . .Grade 11 Logic

It takes exactly 1 hour to burn a rope when I light one of its ends. The rate . . .Grade 11 Logic

Logic puzzle: What number comes next after 66?Grade 11 Logic

Three identical glasses contain orange juice. The first one is 15% full, the . . .Grade 11 Logic

What is the sum of 101 consecutive positive integers if the middle one is n? Grade 11 Logic

Many people stand in a line (queue) to buy tickets to a match. There are . . .Grade 11 Logic

In the first week John made $1. He made 4 times more than the previous week if . . .Grade 11 Logic

How many two-digit integers are there in which the sum of the digits is equal . . .Grade 11 Logic

Twenty years ago, Bob was four times as old as Anna. Today, he is twice as old . . .Grade 11 Logic

Twelve European teams enter a football tournament. Each team plays one match . . .Grade 11 Logic

Anna traveled 3600 miles in a car. She had five tires and changed them such . . .Grade 11 Logic

On January 1st, Anna and Bill have $55 each. Each month Anna saves $5 more . . .Grade 11 Logic

Anna bought 1 slice of mushroom pizza and 2 slices of cheese pizza for a total . . .Grade 11 Logic

There are a number of apples, all of different weights. The 10 lightest apples . . .Grade 11 Logic

John has just had a 1% pay rise. He used to earn $5000 a month. He told his . . .Grade 11 Logic

Multiply all positive numbers below 33. How many zeros are there at the end . . .Grade 11 Logic

Logic puzzle: a secret door. A man approached the door of a secret . . .Grade 11 Logic

The figure shows a triangle made of discs. I want to move two discs and turn . . .Grade 11 Logic

What is half of two plus two minus two? How many possible answers are there . . .Grade 11 Logic

Logic riddle: In a house, there are three switches on the ground floor and a . . .Grade 11 Logic

What is the next number in the following sequence? 1 11 101 111 ?Grade 11 Logic

Anna, Beatrice, and Cindy run a 1000-meter race. All of them run at a . . .Grade 11 Logic

Brett, Cindy, and Daniel each launch a 100-day project. On day 100, Brett . . .Grade 11 Logic

At a party 60% of the boys are dancing with 90% of the girls. How many . . .Grade 11 Logic

There were nine knights in a kingdom and enough hay to feed their horses for . . .Grade 11 Logic

Find a sentence that is true.Grade 11 Logic

If you rearrange the letters NAMELESS, you would have the name of aGrade 11 Logic

I take half of the coconuts plus a coconut. What percentage of coconuts is . . .Grade 11 Logic

I want to measure exactly six minutes using only a five-minute hourglass and a . . .Grade 11 Logic

A series of 10 books were published at one-year intervals. The sum of the . . .Grade 11 Logic

How many "yes or no" questions are needed to guess any 3-digit lock code?Grade 11 Logic

Five pirates capture some treasure. They divide the coins and find that there . . .Grade 11 Logic

Find the number.Grade 11 Logic

What would you choose if you were hungry?Grade 11 Logic

There are four new projects in a company. The sums of the budgets of three of . . .Grade 11 Logic

A rich man is saving for a new car. He sets up an automatic transfer of $1000 . . .Grade 11 Logic

Three years ago there were 32 people in our company, and the ratio of men to . . .Grade 11 Logic

A 40-month long project is divided into three consecutive activities. The . . .Grade 11 Logic

A leading supplier left a solar plant project seven months after the project . . .Grade 11 Logic

In a test of 50 questions, the final score is calculated by subtracting three . . .Grade 11 Logic

Greg takes 100-point tests. He wants to achieve an average grade of at least . . .Grade 11 Logic

If I place a pair of brackets in to this number expression, what result can be . . .Grade 11 Logic

The theory of relativity connects the mass at high speed with initial mass, the . . .Grade 11 Logic

Gerry lives 50 miles away from Jane. He drives to Jane's house at 60 miles . . .Grade 11 Logic

A math test has 40 questions worth 100 points. The test consists of . . .Grade 11 Logic

What is the word coiled inside this circle?Grade 11 Logic

Gerry bought 3 oranges and 8 apples for $5. The next week he bought 8 oranges . . .Grade 11 Logic

Guess!Grade 11 Logic

Three positive whole numbers have the same answer added together or when . . .Grade 11 Logic

In a village, there are 100 families with either one child or none. This is a . . .Grade 11 Logic

We need 200 tons of such stones to pave a city square. How much stone do we . . .Grade 11 Logic

Find the odd one out.Grade 11 Logic

A grocery store lowered the price of coconuts from 49 cents to 48 cents. For . . .Grade 11 Logic

The product of two numbers is 119 and their difference is 10. What is the sum . . .Grade 11 Logic

A third of 8 is $4. Based on that proportion, what is one-fifth of 6?Grade 11 Logic

Zac's number is 5. Anna's number is 6. Bill’s number is 7. What is . . .Grade 11 Logic

300 plus 150 and 300 minus X is the same thing. What is X? Grade 11 Logic

When Pinocchio lies, his nose gets twice as long. When he tells the truth, his . . .Grade 11 Logic

What letter goes next? A E F H I K L M N Grade 11 Logic

In a room, there are 3 bosses, 2 wives, and a plumber. What is the least . . .Grade 11 Logic

Sammy the sea lion has spotted a gorgeous Lady sea lion before anyone else. She . . .Grade 11 Logic

A certain Professor of Statistics is trying to explain to his grandson that . . .Grade 11 Logic

Three observers, not more than 1km apart on flat windless terrain, report the . . .Grade 11 Logic

There are three goddesses named Mendax, Fidelis and Furtibus; one on your left, . . .Grade 11 Logic

One invention saves 20% on fuel; a second, 30%; and a third, 50%. If the . . .Grade 11 Logic

The ratio of women to men at a 100-employee company is 1 : 4. The company . . .Grade 11 Logic

On an European island, 18 are kids, 28 are divorced, 38 are married, and the . . .Grade 11 Logic

Leslie Green asks: Peter changes his old fashioned single 100W incandescent . . .Grade 11 Logic

A shopkeeper purchased 300 bulbs for $0.95 each. However, every . . .Grade 11 Logic

Leslie Green asks: quot;My neighbor Timmy has developed a complicated set of . . .Grade 11 Applied Math

At Wal-Mart, CDs cost $0.50 per disk, and pens cost $1.00 each. Which . . .Grade 11 Applied Math

A father wishes to divide a square piece of land among his five sons. He . . .Grade 11 Applied Math

John's dad pays him $8 for each correct answer he gives in his math homework . . .Grade 11 Applied Math

Bob is looking for a new job. He has three offers with the same starting . . .Grade 11 Applied Math

Bob will work 5 days. Which payment plan should he choose?Grade 11 Applied Math

A restaurant sells a 30 cm (in diameter) pizza for $9, while their large 40 cm . . .Grade 11 Applied Math

A real estate agent receives a 5% commission on the selling price of a house . . .Grade 11 Applied Math

The traveling salesman problem: a salesman has to visit eight towns and return . . .Grade 11 Applied Math

Blind people use a special method to read texts. The method was invented by . . .Grade 11 Applied Math

I use a room that is 7 x 11 to arrange five boxes. I would like to move the . . .Grade 11 Applied Math

I placed seven balls into a square box. Is it possible to rearrange the balls . . .Grade 11 Applied Math

Brad is framing a small flower box by four rectangular bricks. Each of the . . .Grade 11 Applied Math

Yesterday, I caught 30 fish of a certain size in a pond. I marked and . . .Grade 11 Applied Math

Estimate the area of the lake shown on the right.Grade 11 Applied Math

In a casino on a Sunday, 90% of the visitors lost $100 each, 9% of the . . .Grade 11 Applied Math

Several plumbers work on a pipeline installation, which 1 plumber is able to . . .Grade 11 Applied Math

John works on a 12-month project. Forty percent of the first 3-month activity . . .Grade 11 Applied Math

A project manager needs a car 3 days per week. The daily cost of car renting . . .Grade 11 Applied Math

The average hourly wages of men and women in company A are $21 and $16, . . .Grade 11 Applied Math

In an investment club, 90% of the members bought stock in company A, 80% . . .Grade 11 Applied Math

If 9 workers can build 9 houses in 9 months, then how many months would it . . .Grade 11 Applied Math

Jim sells 60 percent of pineapples he had and throws away 10 percent of the . . .Grade 11 Applied Math

A space rocket has a critical fuel system, protected by 4 independent safety . . .Grade 11 Applied Math

A city hall floor is to be tiled in the following pattern. The hall measures . . .Grade 11 Applied Math

It costs $24 to paint a cube. Before painting, it was cut in four pieces by . . .Grade 11 Applied Math

A full box with 70 matches weighs the same as four boxes with 10 matches each. . . .Grade 11 Applied Math

If 5% of the people get 95% of the total salary paid in a county, and the . . .Grade 11 Applied Math

Anna can complete a project in 40 days. Bill can complete the project in 50 . . .Grade 11 Applied Math

I want to construct a solid brick from wooden cubes. Its side ratio is 1 : 2 . . .Grade 11 Applied Math

There are 8 people in a village. They consume 8 coconuts altogether. Each . . .Grade 11 Applied Math

Inspired by Morozkin's problem : Two children started at 6:00 and each . . .Grade 11 Applied Math

Anna and Bill roll a six-sided die. The first person to roll a six wins. Anna . . .Grade 11 Applied Math

The picture shows the rectangular floor plan of the first level of a house. . . .Grade 11 Applied Math

I am placing round beads: 1 blue and 1 red; then 2 blue and 2 red; then 3 blue . . .Grade 11 Applied Math

The rear tires of my car wear out after 60,000 miles, whilst the front tires . . .Grade 11 Applied Math

80% of the women in company A are under 25 years old, 40% of the men in the . . .Grade 11 Applied Math

If Mark had driven at 6 miles per hour (mph) faster than the state speed limit . . .Grade 11 Applied Math

Since the day he was born, Bill's parents have put $1000 in his bank account . . .Grade 11 Applied Math

John sees the reflection of the treetop in a mirror. Find the height of the . . .Grade 11 Applied Math

In selling stock, John made a profit of 19% of the amount originally paid for . . .Grade 11 Applied Math

The size of an NBA basketball court is about 29 by 16 meters. How many . . .Grade 11 Applied Math

Find X.Grade 11 Applied Math

The population density of the Italian capital Rome is about 2,000 people per . . .Grade 11 Applied Math

Each week, Mrs. Smith gives her students as many worksheets as their age. For . . .Grade 11 Applied Math

Jane pedaled downhill at 20 km/h (kilometers per hour) and it took 2 hours to . . .Grade 11 Applied Math

If a real estate agent received $60,000 as a 5% commission on the selling price . . .Grade 11 Applied Math

How much paint do you need to paint the pyramid if you need 1kg for 1 square . . .Grade 11 Applied Math

A district sends, on average, a total of 200 million gallons of water each . . .Grade 11 Applied Math

Gerry was born at 11:55 P.M. on December 31, 2000. Jane was born 6 minutes . . .Grade 11 Applied Math

Steve says that he will be X years old in year X

Anna (A), Bill (B), Cindy (C), and Daniel (D) work on a project. (1) . . .Grade 11 Applied Math

The picture shows a composite structure under stress. Estimate the percentage . . .Grade 11 Applied Math

A plastic ruler is much easier to bend in one direction than another according . . .Grade 11 Applied Math

Leslie Green asks: Income tax is a strange concept when inflation is taken . . .Grade 11 Applied Math

Leslie Green, Oxfordshire, UK, asks: quot;My neighbor a famous Professor of . . .Grade 11 Applied Math

Bob worked for 45 years. He did not work on weekends, had a 3-week summer . . .Grade 11 Applied Math

There are two gods named Mendax and Fidelis, one on your left, the other on . . .Grade 11 Applied Math

An elephant weighing 2 tonnes (2 metric tons) and a rabbit weighing 1kg are . . .Grade 11 Applied Math

If $1 equals 0.9 Euros, $1 equals 1.02 Swiss francs, and 1 euro equals 9.5 . . .Grade 11 Applied Math

The ratio of women to men at a 100-employee company is 1 : 4. The company . . .Grade 11 Applied Math

Sasha is learning about Archimedes at school. His show-off sister is 3 years . . .Grade 11 Applied Math

The largest denomination of currency ever printed by the Bureau of Engraving . . .Grade 11 Applied Math

Leslie Green asks: Engineers need to use quantities which can vary over at . . .

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