Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

Replace the question mark with the correct number in the below-given picture?

You find yourself in a strange place guarded by two guards.One of the guard always say truth while other always lies.You don't know the identity of the two.You can ask only one question to go out from there. What should you ask?

Who are the happiest people in IPL match?

What is the fastest way to double your money?

Using eight eights and addition only, can you make 1000?

Can you think of a smallest +ve number such that if we shuffle the digits of the number, the new number becomes double the original number?

My friends called me Iron59 because my parents are a chemist and a mathematician. What is my real name?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

In the image given, you can find several triangles. Can you count them all?