A chicken farmer has figured out that a hen and a half can lay an egg and a half in a day and a half. How many hens does the farmer need to produce one dozen eggs in six days?

Prove that twice of ten is the same as twice of eleven.

There was a strange boy who was born before his father. How can this be possible?

How many triangles can you find in this given picture?

A man is looking at a photograph of someone. His friend asks who it is. The man replies, “Brothers and sisters, I have none. But that man’s father is my father’s son.” Who was in the photograph?

You walk into a room and see a bed. On the bed, there are two dogs, five cats, a giraffe, six cows, and a goose. There are also three doves flying above the bed. How many legs are on the floor?

If eleven plus two equals one, what does nine plus five equal?

Who has married many women but was never married?

What number do you get when you multiply all of the numbers on a telephone's number pad?

what does this picture(rebus) riddle means ?