Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

What breaks yet never falls, and what falls yet never breaks?

When we see 2 but call 10?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

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 ?

No matter how little or how much you use me, you change me every month. What am I?