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?

There are forty elephants and they have forty-fore heads. How can this be possible?

What can you see in the middle of March and April that you can never see in any other month?

In this image, you can see three almost identical Doraemon images. Can you spot the odd one out from them?

In two decks of cards, what is the least amount of cards you must take to be *guaranteed* at least one four-of-a-kind?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

I am a white box having no key or lid.
Yet there is a golden treasure inside it.

What Am I?

A boy collects white seashells from the sea and brings them home every night. When he has enough of them, he decides to sell them to a trader.

The trader is ready to buy the shells and he asks the boy about the quantity. At this, the boy starts calculating. He has a giant box that contains 3 mini boxes. Two of them have another mini box inside. If the giant box can hold 50 shells, how many brown shells can he sell to the trader?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

The world's largest Thanksgiving turkey was on display at a fair. Everyone was admiring it when suddenly a woman ran up and shot the turkey and left. Everyone knew her yet nobody made any attempts to stop or report her. Why?