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?

Cristina leaves home and then she makes exactly 3 left turns and returns home where she found 2 girls wearing the mask.

Who are these two masked girls?

In the picture given below, can you find out which digit will take place of the question mark?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

Can you start the fire using two pieces of wood?

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

Count the number of triangles in the picture below:

When it is alive we sing, when it is dead we clap our hands. What is it?

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

In The 1st month of this year(the year 2013), I noticed that the date 13-1-13 (13 January 2013) is special.

This date is special as:

Date * Month = Year.

Can you figure out which year of this century has a maximum number of such dates?