Spot the cat in the picture below
Which number should replace the question mark?
It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.
Who is it?
When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?
What do you call a fish without an eye?
Solve the equation by replacing the alphabet with numbers.
MOM + MOM + NO = BOOK=
I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?
How many people must be gathered together in a room, before you can be certain that there is a greater than 50/50 chance that at least two of them have the same birthday?
Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?
Replace the question mark with the correct number.
2 + 2= 4
3 + 3= 18
4 + 4= 48
5 + 5= ?
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