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?

Suppose you are a girl candidate and sitting in an interview. Suddenly the interviewer asks you, 'What if one morning you wake up and find out that you are pregnant?

How will you reply to such a question?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Find the hidden panda in the image below.

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Can you name four days which start with the letter 'T'?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Here is a mathematical expression that also secretly tells a movie name. What movie is that?

What is full of holes but still holds water?

Replace the question mark with the correct number below.