John is asked to stand behind Jacob and Jacob is asked to stand behind John. Both of them feel confused about it and don't know what to do?

But it is quite possible, do you know how?

Four men were in a boat on the lake. The boat turns over, and all four men sink to the bottom of the lake, yet not a single man got wet! Why?

A container contains 100 eggs. They can be either fresh or rotten. What is sure is the fact that there is at least one fresh egg in that container.

If you are asked to pick two eggs randomly from the container, at least one of them will be rotten.

Can you calculate how many eggs in that container are fresh?

Move three sticks of the spiral below to form a square.

What four weights can be used to balance from 1 to 30 pounds?

What has 88 keys?

Find the smallest sentence with all the English alphabet.

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?