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?

Mr Red Lives in the red house.
Mr Green Lives in the greenhouse.
Mr Yellow Lives in the yellow house.

Who lives in the Whitehouse?

Can you make a fire with just a single stick?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

10+10 and 11+11 can give you the same answer.

Explain how?

How many bricks does it take to complete a building that is 15 feet wide, 30 feet deep, and 12 feet tall made of brick?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

You can find some missing letters in the picture. By placing two particular letters in the spaces, you can form a nine lettered word beginning from one of the corners and going clockwise direction to the middle. Can you find out the letters and the word?

If you toss a coin 10 times and it lands heads up every time, what are the chances it will land heads up if you toss it again?