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.

A man stands on one side of a river, his dog on the other. The man calls his dog, who immediately crosses the river without getting wet and without using a bridge or a boat. How did the dog do it?

Which tank will fill first?

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 ?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

In a supermarket, there is an intelligent glass pane before a refrigerating unit. This glass pane allows cherries and apples through it but does not allow grapes and Orange to pass through it.

Can you identify the rule that the glass pane is following?

John named his first son Alpha, second Beta, third Charlie and fourth Delta. What is the fifth son's name?

How many bananas can you eat if your stomach is empty?

By moving just one matchstick, you need to make the below statement true. Can you do it?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?