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 ?

Two in a corner, one in a room, zero in a house, but one in a shelter. What am I?

Why is Saturday stronger than Monday?

What is the fastest way to double your money?

If six children and two dogs were under an umbrella, how come none of them got wet?

I don't get anymore wetter, no matter how much rain falls on me.

Three cars are driving on a track that forms a perfect circle and is wide enough that multiple cars can pass anytime. The car that is leading in the race right now is driving at 55 MPH and the car that is trailing at the last is going at 45 MPH. The car that is in the middle is somewhere between these two speeds.
Right now, you can assume that there is a distance of x miles between the leading car and the middle car and x miles between the middle car and the last car and also, x is not equal to 0 or 1.
The cars maintain their speed till the leading car catches up with the last car and then every car stops. In this scenario, do you think of any point when the distance between any two pairs will again be x miles i.e. the pairs will be x distance apart at the same time ?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

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

Can you make numbers like 24, using numbers 3,3,7 & 7 with any arithmetic operator?