A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

A man is trapped in a room. The room has only two possible exits doors. Through the first door there is a room constructed from magnifying glass. The blazing hot sun instantly fries anything or anyone that enters. Through the second door there is a fire-breathing dragon. How does the man escape?

You have two buckets of 11 liters and 6 litres.
How can you measure exactly 8 litres?

Which number should replace the question mark?

I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

What word begins and ends with an E, but has only one letter?

Using Only Five 5's and any mathematical operator make sum as 37

Our product and our sum always give the same answer. Who are we?

There is an English word that can be used up to four times in a row without modifying the spelling and form a valid grammatical sentence.

Do you know what word is that?

Jack have ten pairs of black socks, eight pairs of white socks and seven pairs of green socks. Everything is mixed in a draw. As there is no light he were not able to identify the colour of the socks. How many of the socks did he want to take to match one pair