Answer:
What gets sharper the more you use it?
The more you take away the bigger I get. What am I?
What is made of water but if you put it in water it will die?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?
You find me behind the stars; or in a sixth seventh or third. It takes something round a computer and me to make pie. I am bigger than anything you can think of.
I am your mother's brother's only brother in law. Who am I?