Complete the table series riddle by finding the number that can replace "??".

What is wrong in the below Picture?

Consider all the numbers between 1 and 1 million. Among all these numbers, there is something very special about the number 8 and the number 2202. What is it?

Many have heard it, but nobody has ever seen it, and it will not speak back until spoken to. What is it?

In my garden, I have many trees but only one of them is the mango tree. In these mango trees, there are some mangoes(as expected).

But after a strong wind, there are neither mangoes on the tree nor on the ground. Explain?

A man had five children. He had $100 with him to give to his children. He decided to start with the youngest child and then give $2 more than each younger child to his next elder child.

For example, if he gives $x to the youngest child, he will give $(x+2) to the next one, $[(x+2) + 2] to the next one and so on.

Can you find out how much did the youngest one receive?

Take 9 from 6, 10 from 9, 50 from 40, and leave 6.

How Come ??

Something Extraordinary happened on May 6th 19778 at 12:34am what was that?

What does this mean?

CCCCCCC

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?