How can a man go eight days without sleep?

Place a mathematical symbol between the numerals 5 and 9 in such a way that the resulting number is greater than 5 but smaller than 9.

What jumps when it walks and sits when it stands?

Identify The phrase in the picture.

Use only one mathematical symbol and all numbers (0-9) to get a sum of 99

I add 5 to 9 and get 2. The answer is correct, so what am I?

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?

The dirtier I get, the whiter I look. Who am I?

Which is faster, Heat or Cold ? Explain.

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?