What is so fragile that saying its name breaks it?

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?

You have 10 balls with you. A friend of yours out of nowhere asks you to place those ten balls in five lines such that each of the lines has exactly 4 balls on them. He needs to check your intelligence. Prove him by doing the task.

What happened when the wheel was invented?

Name one eight-letter word with 'kst' in the middle, 'in' the beginning, 'and' at the end.?

What word is pronounced the same if you take away four of its five letters?

A B C D E F G H

These are the letters given to you. Now you have to find out the letter that comes two to the right of the letter which is immediately to the left of the letter that comes three to the right of the letter that comes midway between the letter two to the left of the letter C and the letter immediately to the right of the letter F.

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

They are three errirs in this question. Can you find them?

John is selling fruits.
He sells grapes at $30, Dates $25, and a Wolfberry $45.
At what price does he sell fig?

PS: Logical Thinking