what does this picture(rebus) riddle means ?

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

Solve the equation by replacing the alphabet with numbers.

MOM + MOM + NO = BOOK=

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

If you remove one from eleven, it becomes ten. If you remove one from nine, it becomes ten.

How is this possible?

In the attached figure, you can see a chessboard and two rooks placed on the chess board. What you have to find is the number of squares that do not contain the rooks. How many are there?

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

A Shopkeeper collects 71 rupees in the form of 20 paisa and 25 paisa.
He collects a total of 324 coins.

Can you tell me how many number of 20-paisa and 25-paisa he got?

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 does the below rebus means?