I’m light as a feather, yet the strongest person can’t hold me for five minutes. What am I?

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)?

Lifeless eyes on my smiling face and watch your child's sleeping place. In their dreams they hold me tight. What am I?

Give it food and it will live; give it water and it will die.

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

If a wheel has 54 spokes, how many spaces are there between the spokes?

I sleep during the day and fly at night, but I have no feathers to aid my flight. What am I?

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

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?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?