One absent-minded ancient philosopher forgot to wind up his only clock in the house. He had no radio, TV, telephone, internet, or any other means for telling time. So he travelled on foot to his friend's place a few miles down the straight desert road. He stayed at his friend's house for the night and when he came back home, he knew how to set his clock. How did he know?

Count the number of squares in the picture below.

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

Give it food and it will live; give it water and it will die.

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

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

Solve the puzzle by telling what does below picture means.

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

How many times in a given day, minutes and hour clock comes in a straight line ?