P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

What jumps when it walks and sits when it stands?

A boy and his father are caught in a traffic accident, and the father dies. Immediately the boy is rushed to a hospital, suffering from injuries. But the attending surgeon at the hospital, upon seeing the boy, says 'I cannot operate. This boy is my son.' How is this situation explained?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

Where do fish keep their money?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Decode the below four famous ciphers:

8P of the SS
1M of the E
1S of the SS
60M in 1H

Different lights make me strange by changing me into different sizes. What am I?

The average age of 10 members of a committee is the same as it was 4 years ago, because an old member has been replaced by a young member. Find how much younger is the new member ?