What has no start, end, or centre?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

What does this say?

XLR8

I shave every day, but my beard stays the same. What am I?

Find the number of squares in the below picture

A father's child, a mother's child, yet no one's son.

Who am I?

A man has a barrel filled with oil that weighs 100 pounds, and then he puts something into it. Now the barrel weighs less than 100 pounds. What did he put in the barrel?

What is greater than gold but cannot be bought. it can never be sold and can earn if its sought. though it can be broken, it can still be fixed. for by birth it can't start nor by death it is ended.what am i?

Complete the following series. It.s very logical:

1, 4, 5, 6, 7, 9, 11, __?

Can you find out which options fits best with the missing column?