How can a man go eight days without sleep?

Use the numbers 2, 3, 4 and 5 and the symbols + and = to make a true equation. Conditions: Each must be used exactly once and no other numbers or symbols can be used.

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

What goes up but never comes down?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

How can you make number one disappear by adding something to it?

In the given figure, you can see that four match sticks are used to form a square. Can you form five squares by using six matches?

You can see it everyday, But cannot touch it at will. What is it?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?