It belongs to you, but other people use it more than you do. What is it?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

You can see three almost identical images below. Can you spot the odd one out from them?

It is a six-letter word.
The first four letters are me.
The second and last letters are the same.
The fourth second and last letter is payment.

Who is it?

The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

Solve the puzzle by telling what does below picture means.

What has one eye, but can’t see?

Find a 9-digit number, which you will gradually round off starting with units, then tenth, hundred etc., until you get to the last numeral, which you do not round off. The rounding alternates (up, down, up ...). After rounding off 8 times, the final number is 500000000. The original number is commensurable by 6 and 7, all the numbers from 1 to 9 are used, and after rounding four times the sum of the not-rounded numerals equals 24.