10+10 and 11+11 can give you the same answer.

Explain how?

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

A man dies of old age on his 25 birthday. How is this possible?

A father's child, a mother's child, yet no one's son.

Who am I?

In an interview, a boy was asked an unusual question 'How two persons sitting with a table in between them can't see each other?' He was unable to reply. Can you?

John and Jill are madly in love with each other. To remind Jill of his pure love, John wants to send her a ring by post but in their country where burglary is quite prominent, any package that is not locked comes under the risk of being stolen for the contents.

John and Jill possess many padlocks but neither one of them has the other key.

Can you find a way John can send the ring to Jill safely?

There was a blind man. He had four socks in his drawer either black or white. He opened it and took out two socks. Now the probability that it was a pair of white socks is 1/2.

Can you find out the probability that he had taken out a pair of black socks ?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Solve the puzzle by telling what does below picture means.

What jumps when it walks and sits when it stands?