How old is your son? asked a man to his neighbour. My son is five times as old as my daughter and my wife is five times as old as my son. I am twice as old as my wife whereas my grandmother, who is celebrating her eighty-first birthday is as old as all of us put together.

How old is the man's son ?

I shave every day, but my beard stays the same. What am I?

What number do you get when you multiply all of the numbers on a telephone's number pad?

In a box, there is a jumble of 7 red balls, 6 blue balls, 5 green balls, and 4 yellow balls. What is the minimum number of balls, will you have to pick up so that you have at least 4 balls of the same colour?

Can you find the key in the picture below?

What's the best place to go shopping in the ocean?

You can hear me, but you can't touch or see me.

What am I?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

What can go through glass without breaking it?

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