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 ?

Find the hidden tiger in the given optical illusion ?

The chance of Mr John winning the lottery is 10%. All participants lined up and Mr John is 4th in the row. The first three participants lose the lottery.

What is the chance of Mr John now?

Why do people go to bed?

How many words can a pen with half refill write?

Which city is three-fifths chick two third cat and 50% goat?

Can you count the number of triangles inside a triangle?

Can you quickly find which two matchstick figures are identical?

Find the next number in the sequence

5 12 24 36 ?

Can you arrange four 9's and use at most 2 math symbols, to make the total 100?