How many letters are there in the correct answer . . .

The number of hours left today is half of the . . .

Brad has as many brothers as sisters. How many . . .

If you write all numbers from 0 to 109, which . . .

The product of three consecutive whole numbers is . . .

A melon slice weighs 5 kg, and 95% of the weight . . .

Four friends tried to guess the number of sheep . . .

Alex needs six tacks to fix two rectangular . . .

Five students put their sandwiches into five . . .

Fifteen numbers have an average of 15. Five of . . .

Anna's income is seven-eighths that of Beatrice. . . .

How many times do the clock hands form a . . .

The last digit of the number 3

How many planes of symmetry does a cube have?

The number 99! is very big. How many zeros are . . .

I roll two dice. What is the probability that . . .

How many squares can you make using twelve . . .

You take half of syrup and mix it with the water, . . .

Find the hundreds digit (third digit from the . . .

The product of 2 integers is 1000. Find the . . .

A lady, attempting to avoid revealing her real . . .

It costs $24 to paint a cube. Before painting, . . .

What is the smallest integer that is 4 times the . . .

Twelve couples met at a party. Each person . . .

What is the units digit of 1! + 2! + 3! + ... + . . .

There are four brothers in a family. The sums of . . .

The left picture shows nine dots arranged in a 3 . . .

Two princes and two princesses are ready to . . .

Which shape fits in the missing space to complete . . .

A password includes only two different digits. . . .

The picture shows a tiling pattern which is made . . .

Which of these diagrams could be drawn without . . .

I wrote all the numbers from 0 to 999. Which . . .

The diagram shows 15 billiard balls that fit . . .

Which of these diagrams could be drawn completely . . .

There are 10 girls and 10 boys in a class. A . . .

How many ways can one travel from point H to . . .

Multiply all positive two-digit numbers. How . . .

You have four piles: three piles with real coins . . .

Benny Bunny starts jumping from a hole. Every . . .

How many times do the two hands of a clock point . . .

After a gun fired in a saloon, 75% of the cowboys . . .

How many zeros are there at the end of . . .

It takes 2 cards to build 1 floor of a card . . .

I must balance any whole number load from 1 kg to . . .

Based on 20 years per generation, estimate the . . .

What is the sum of all the digits (not numbers) . . .

Two dice are thrown. Two numbers are . . .

Two cards are randomly chosen. Two numbers are . . .

What is the average of the smaller of two random . . .

What is the average of the smaller of three . . .

Three white hens and four black hens lay as many . . .

How many seconds were in 2012?

A kitten has a 50/50 chance to be male or female. . . .

Which is the sum of all digits of the decimal . . .

2889 digits are used to number the pages of a . . .

A jigsaw puzzle consists of 250 identical pieces . . .

Bob the plumber has 10 pockets and 60 nuts. He . . .

How many three-digit multiples of 7 end with . . .

How many three-digit numbers containing only even . . .

What is the largest digit in the product of . . .

What is the maximum number of pieces that an . . .

What is the smallest positive integer that has 12 . . .

What is the number of "Friday the . . .

What is the largest product of positive integers . . .

What is the sum of all 5-digit integer numbers . . .

What is the probability that a point chosen . . .

A farmer puts several pigs into three pens. . . .

How old is the eldest sister if the product of . . .

How many integers from 1 to 100 can be written as . . .

San Jose Scrabble(r) Club No. 21 published a . . .

Three apples were weighed in pairs and the . . .

Thinking outside the box: 52 - 28 = 4 . . .

This shape was formed by removing a small cube . . .

Which gives the largest answer?

In a city Konigsberg, there were seven bridges. . . .

Large individual letters are differently priced. . . .

In a city, there were seven bridges. There was . . .

Four matchsticks form a square. How many . . .

I arranged eight wooden sticks in the shape of a . . .

Three mentors and four apprentices produce as . . .

The date July 31, 1370 in MM/DD/YYYY format is a . . .

Guesstimation. How many tennis balls can fit . . .

Which number comes next? 2, 12, 1112, 3112, . . . .

What is the maximum number of apples (ideal . . .

How many different cubes can I make by using six . . .

On an island, all parents continue to have . . .

A sphere fits inside a cube. The maximum possible . . .

Find a phrase that differs from the others.

I want to measure exactly six minutes from the . . .

I want to cut a wooden cube that is five inches . . .

I arranged twelve one-inch wooden sticks in a . . .

You have 240 golden bricks identical in size and . . .

Logic puzzle: a secret door. A man approached . . .

The difference between a two-digit number and the . . .

Find the angle between two diagonals drawn on two . . .

I have four boxes, each containing identical . . .

In a bakery store, 400 customers participated in . . .

An entrepreneur wants to hire the best person for . . .

Logic riddle In a house, there are three . . .

How many three-digit numbers have exactly five . . .

One hundred soldiers form a 10 x 10 square. . . .

There are 9 children in a class and each knows a . . .

Find the odd one out.

On average there are 100,000 strands of hair on a . . .

What is the next letter in this series?

What is the smallest number of matchsticks you . . .

You are shrunk so that your height is equal to . . .

I have a rectangular piece of cheese with a round . . .

A donkey must transport 900 carrots to the . . .

Make two fractions with all the digits from 0 to . . .

A magician placed 3 bowls of fruit in 3 closed . . .

It takes exactly 1 hour to burn a rope when I . . .

I place 1000 coins in two columns of a wooden . . .

What is the average of the largest of N random . . .

Logic riddle: In a house, there are three . . .

Benny Bunny starts jumping from a hole. It . . .

Six goldfish need 2/3 of a cup of fish food per . . .

Which city is the odd one out?

What word has letters that are not in . . .

Is it legal for a man in Montana to dance with . . .

If you rearrange the letters NAMELESS, you would . . .

Logic puzzle. Only the first and last letters of . . .

A pyramid and a tetrahedron with edges of the . . .

"Three sailors come across a pile of coconuts. . . .

I take half of the coconuts plus a coconut. . . .

I want to measure exactly six minutes using only . . .

I need 1 + 9 + 25 = 35 cubes to build a pyramid . . .

If you wrote all the whole numbers from 1 to . . .

Mount Everest is the Earth's highest mountain . . .

If you rearrange the letters NAPDOL, you would . . .

If a square is four and a triangle is three, how . . .

I place 11 chairs along the walls in an empty . . .

The Lucas problem. François Édouard Anatole . . .

A man eats 20 coconuts in 20 days. Together with . . .

There are 12 people in a village. They have 12 . . .

Vladimir Arnold (1937-2010), one of the greatest . . .

Inspired by Morozkin's problem : Two children . . .

1 gives 2 2 gives 6 3 gives 12 4 gives 20 . . .

A committee consists of 7 people. The committee . . .

A CEO of the start-up company Big Money, James . . .

Guesstimation A man can jump up to four times . . .

Thinking outside the box: Which statement is . . .

Job interview logic puzzle in a bank. Which of . . .

Wikipedia says that the equator is about 40,075 . . .

Which number goes next? 1 3 6 10 ?

How many 1x1 squares fit into the large square . . .

What is the 100

Anna and Bill roll a six-sided die. The first . . .

There are 190 coconuts in a basket. Sailors one . . .

The weights of each pair of these boxes are 98 . . .

If regular stars are placed as shown to form a . . .

In a game, Anna and Bill take 1, 2, or 3 coins on . . .

What fraction of this regular octagon is shaded?

You can throw an unlimited number of darts at the . . .

How many sets of three consecutive integers whose . . .

In a city, sixty percent of the men are married . . .

Which year has had the greatest number of Roman . . .

How many "yes or no" questions are needed to . . .

Which result ends in exactly seven zeroes. . . .

The product and sum of two positive integers X . . .

The wind in the open-air swimming pool increases . . .

Which point cuts the rope into two equal parts?

You roll two dice. Estimate the expected value . . .

If John walks up an escalator at a rate of one . . .

Two proofreading programs, A and B, discovered 30 . . .

On an island, three-quarters of the men are . . .

After a test of a code, John detected 2 errors . . .

If you were to spell out the numbers, how far . . .

A father has left 47 donkeys for you to . . .

Find the logic: 12345678 -> 4 234567 -> 2 3456 -> . . .

One quarter of the competitors were faster than . . .

Which numeral system states that 7 + 6 = 15

One by one, 40 cars enter a company parking lot . . .

Five students Anna, Bill, Craig, Daniel, and . . .

You pay $6 to enter a game. You roll 2 dice. . . .

How many uninteresting numbers exist? The . . .

Share $10 among boys and girls so that each girl . . .

How many sets are there of three consecutive . . .

If the sum of 999 positive integers is equal to . . .

What is the maximum possible difference between . . .

What gives the largest result?

The difference of two positive integers is equal . . .

Find the product of 111,111,111 x 111,111,111

The amount of water flowing into a tank doubles . . .

A pirate boat is floating on a lake. The pirates . . .

I have 33 coins. What is the minimum number of . . .

There are 5 children in a boat. Four of them do . . .

The product of two integers is 1000. Neither of . . .

Len's number is 31. Jim's number is 32. Sam's . . .

Seven trees are planted in a park, not closer . . .

Which is a better fit? The smaller the . . .

Once upon a time, there were three little pigs - . . .

"This is a capital letter of the alphabet that's . . .

I multiply the ages of three kids and get 48. . . .

What is the most money you can have in $1, $2, . . .

Three overlapping squares form 5 squares . . .

You have a large supply of 5 kg and 12kg weights. . . .

The diagram shows the lowest point and the . . .

A car traveling with speed 12 meters per second . . .

If I place a pair of brackets in to this number . . .

If each coconut is priced at $9, then the . . .

Bob used to weigh 100 kg. His new stressful job . . .

I composed the numbers from strips of paper. . . .

I composed the numbers from strips of paper. . . .

Which number required the most paper?

Which is correct?

If January 1st, 2014 was Thursday, how many . . .

Gerry's circular garden is 1200 m in diameter and . . .

What is the maximum number of sections into which . . .

How many 9s are there in the result of the . . .

How many 1s are there in the result of the . . .

If Gerry gives Jane one apple, they will have the . . .

After an hour, Evguenia catches and frees 10 . . .

Which regular shape cannot be used to tile a . . .

How many squares of all different sizes are on a . . .

Guess!

What is the word coiled inside this circle?

Guess!

Which of the following is least like the others?

How many letters are there in the word that all . . .

Three positive whole numbers have the same answer . . .

A grandmother prepared bowls with fruits for her . . .

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