If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?
There are 3 apples in the basket and you take away 2. How many apples do you have now?
When I get multiplied by any number, the sum of the figures in the product is always me. What am I?
What question can you never answer yes to?
What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?
Buy me, smell me or deliver me, I do not change. Who am I?
What do you get if you add 2 to 100 four times?
What is the next shape from answers A, B, C, and D figure?
Which number should replace the question mark?
Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?
What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?
In 2007, a puzzle was released and $2 million prizes were offered for the first complete solution. The competition ended at noon on 31 December 2010, with no solution being found. Wiki
