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

Count The number of F's in the paragraph below:

"FINISHED FILES ARE THE RESULT OF YEARS OF SCIENTIFIC STUDY COMBINED WITH THE EXPERIENCE OF YEARS"

What is more useful when it is broken?

What can run but never walk, have a mouth that never speaks, have a head that never weeps, and have a bed but never sleeps?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

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

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

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

If six children and two dogs were under an umbrella, how come none of them got wet?

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?