Can you find a number that lies one third of the distance between 1/3 and 2/3?

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 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?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

A tree doubled in height each year until it reached its maximum height over the course of ten years. How many years did it take for the tree to reach half its maximum height?

I am a number I am not an odd number I am higher than 90 I am not higher than 100 If you subtract me from 100, you get nothing. What number am I?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

A word I know has six letters it contains, remove one letter and 12 remain. What is it?