If eleven plus two equals one, what does nine plus five equal?

Identify the hidden meaning behind this picture?

I know a nine-letter word having only one vowel.
Do you ?

What is the difference between a jeweller and a jailer?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?

I am working in a bus company. The company recently went under expansion and therefore there was not enough room for all the buses. As a result, twelve buses had to be stored outside.

If the company decides to expand the garage space by forty percent, enough space to accommodate the current buses will be created leaving enough space for twelve more buses if the need arises in future.

Can you calculate the number of buses that the company owns at present?

Can you count the number of triangles in the given figure?

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

When it's bad luck to meet a black cat?