What is common among 11, 69, and 88?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

What do you call a fish without an eye?

Find the number of squares in the below picture

I’m orange, I wear a green hat and I sound like a parrot. What am I?

What does this mathematical rebus means ?

You are given four tennis balls and asked to arrange those balls in a manner that the distance between each one of them is exactly equal. How will you do it?

Can you count the number of lines in the below picture?

Eight of us go fourth, not back, to protect our king from an attack. What are we?

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 ?