How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

Which point will the car reach to go out?

A woman lives in a skyscraper thirty-six floors high and is served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

A bus driver was heading down a street in Mexico. He went right past a stop sign without stopping, he turned left where there was a "no left turn" sign, and he went the wrong way on a one-way street. Then he went on the left side of the road past a cop car. Still - he didn't break any traffic laws. Why not?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

Remove two matchsticks to make the below equation correct.

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

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