When I got four, I have it none.
When I got two, I have it some.
When I got none, I have it all.

What is it?

John was gifted a new Hayabusa. He drove x miles at 55mph. Then he drove x+20 miles at 40mps. He drove his bike for 100 minutes. How much distance did he travel?

Who has married many women but was never married?

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.

If a wheel has 54 spokes, how many spaces are there between the spokes?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Count the squares in the matchstick puzzle below?

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

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?