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 under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

What is the Surname of Barbie Doll?

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?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?