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

Why 1729 is a magic number? Answer Logically.

Irene killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

What has lots of eyes, but can’t see?

Using Only Five 5's and any mathematical operator make sum as 37

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

I have no life, but I can die. What am I?

A four-digit number (not beginning with 0) can be represented by ABCD. There is one number such that ABCD=A^B*C^D, where A^B means A raised to the B power. Can you find it?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Solve this tricky question. You are trapped in a forest. With you, you have a gun preloaded with two bullets in it. In front of you, there is a tiger, a leopard and a jaguar.

How do you survive?