What is black when you buy it, red when you use it, and gray when you throw it away?

How many times in a given day, minutes and hour clock comes in a straight line ?

Solve this tricky question. You are trapped in a forest. With you, you have a gun preloaded with two bullets in it. In front of you, there is a tiger, a leopard and a jaguar.

How do you survive?

No matter how little or how much you use me, you change me every month. What am I?

Why is a river so rich ?

French Police inspects a room where there are no windows, no doors, no tables and is almost empty expect there is just a puddle of water. They found a dead man who obviously hung herself from the ceiling, but they are not able to figure out how this had happened.

John and Jacob entered the crime scene and easily able to solve the case.

How did the man die?

Can you write down eight eights so that they add up to one thousand?

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

Can you make four (4) nines (9) equal 100?

Find the last number in the series below:

voN luJ yaM raM ---