Spot what is wrong here in below Picture?

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?

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

What is the riddle which can be asked all day with a different correct answer each time.

If your uncle’s sister is not your aunt, what relation is she to you?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

Find three numbers such that

* When we multiply three numbers, we will get the prime numbers.
* The difference between the second and the first number is equal to the third and second.

There is a square piece of paper with a hole that is denoted by the circle on the top right side in the given picture. You have to cut the paper in a manner that it forms two and only two separate pieces of paper and then rearrange the pieces in a manner that the holes come in the centre of the paper.

Solve the following series:
AZ, GT, MN, __, YB

There are nine dots in the picture that has been attached with this question. Can you join all the dots by drawing four straight lines without picking up your pen?