What does this rebus means ?

PROG WORKRESS

I am something people love or hate. I change peoples appearances and thoughts. If a person takes care of them self I will go up even higher. To some people I will fool them. To others I am a mystery. Some people might want to try and hide me but I will show. No matter how hard people try I will Never go down. What am I?

I know a country, If you remove the last alphabet of its name, it will become a part of your body. Do you name it?

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

On one occasion, A Boy collects 71 rupees in form of 20 paise and 25 paise. He collects a total of 324 coins.

Can you tell me how many 20-paisa and 25-paisa he got?

Keyboard words are not in alphabetical order, Why?

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

What makes this number unique: 8,549,176,320?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

John replied, when asked how old he was. In 2 years he will be twice as old as he was five years ago.' How old is he ?