Can you write down eight eights so that they add up to one thousand?

What you cannot hold but it is yours?

How many letters are in the alphabet?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

The more of this there is, the less you see. What is it?

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

How many times can you subtract the number two from the number fifty?

This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it for a bit, you will find out why it is truly so unusual. So what is it? What is so unordinary about this paragraph?

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?

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?