It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

What always comes into a house through the keyhole?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

Prove that twice of ten is the same as twice of eleven.

What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

Can you place six X (crosses) in below board without making three in a row in any way ?

Can you solve below mathematical equation?

2^1234 - 2^1233

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

A kind heart person buy packed food at 3$/packet from United states and sells them at 1$/packet at Africa. After some time he becomes a millionaire.

How come the guy become millionaire ?

The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?