When Jack was six years old he hammered a nail into his favourite tree to mark his height. Ten years later at age sixteen, Jack returned to see how much higher the nail was. If the tree grew by five centimetres each year, how much higher would the nail be?

Find the value of "?" in the ball picture Riddle below:

Dr Doom invited a group of puzzle fanatics to a party which was oriented toward having puzzle-oriented games. At night, he introduced the guests to a 'unique riddle'. A prize was offered to the one who solved it first.

The guests included six people named Tom Paul, Fox Obama, Jeremy Reener, Alex Murphy, Prim Pastor, and Ellen Page. The winner of the 'unique riddle' contest was to be announced after the dinner. So Dr. Doom stood up and started the announcement:

'Okay now everybody!'
'The winner of�'
'The Hardest Riddle Ever Event'

But before he could complete it, the light went out and his voice was not heard without the mic by anyone. But they already knew who the winner was. Can you deduce the name of the winner?

What 5-letter word typed in all capital letters can be read the same upside down?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Count the number of squares in the picture below.

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

Most people think of me as money. But when they find me in the water, they won’t get any money out of me. What am I?

What's the only room from which no one can enter or leave