I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

There was a strange boy who was born before his father. How can this be possible?

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 ?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

John and Jacob are twin brothers. One of them is a liar whereas the other one is a truth-teller.

I called their home number and one of them picked up.
I asked. 'Does John lie?' The person replied with a yes.

Whom did I talk with, John or Jacob?

There were three women in all the swimming costumes!
One was happy and the other two were sad!
The happy one was crying and the sad ones were smiling.
Why was this?

What number divided by 4 is the same as that number minus 4?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

An equation has been laid down using a few matchsticks. However, as you can see, the equation is not correct. Can you correct the equation if you are allowed to add or remove 5 matchsticks?