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?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

Why do you find that most of the buildings are deprived of the 13th floor?

The more of this there is, the less you see. What is it?

It belongs to you, but other people use it more than you do. What is it?

Can you move 2 matchsticks to form four equal sized squares.

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

People make me, save me, change me, raise me. What am I?

If one and a half boys, eat one and a half burgers in one and a half hours.

How many burgers can 9 boys eat in 3 hours?

There are three boxes. One is labeled "APPLES" another is labeled "ORANGES". The last one is labeled "APPLES AND ORANGES". You know that each is labeled incorrectly. You may ask me to pick one fruit from one box which you choose.

How can you label the boxes correctly?