You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

81 x 9 = 801. What must you do to make the this equation true?

Look at the picture and find out which square is not linked with any of the other squares.

Can you move 2 matchsticks to form four equal sized squares.

How many sides does a circle have?

Identify the 10 differences between the two given pictures.

Replace all '*' with digits 1, 2, 3, 4, 5 and 6 to make below statement true.

* *
x *
=====
* * *

If a shopkeeper can only place the weights on one side of the common balance. For example, if he has weights 1 and 3 then he can measure 1, 3 and 4 only. Now the question is how many minimum weights and names of the weights you will need to measure all weights from 1 to 1000? This is a fairly simple problem and very easy to prove also.

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

A rubber ball keeps on bouncing back to 2/3 of the height from which it is dropped. Can you calculate the fraction of its original height that the ball will bounce after it is dropped and it has bounced four times without any hindrance ?