One day, John and his friends were playing around. Jacob hit something with a Pin and it popped. John's dad came into the room that very moment, but he wasn't mad. In fact, he was smiling. What did Jacob hit?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

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?

The more you take me, the more you leave me behind.
Who Am I?

Pronounced as one letter,
And written with three,
Two letters there are,
And two only in me.
I am double, I am single,
I am black blue and grey,
I am read from both ends,
And the same either way.

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