What does this Rebus Picture mean?

A number can be multiplied by multiple of nine
i.e 9 18 27 36 45 ...

and the resulting number consist of only one digit.

Can you identify the number ?

I have a mouth but I don't eat.
I have a bank but have no money.
I have a bed but i dont sleep.
I wave but have no hands.

Who Am I ?

A bag contains 64 balls of eight different colours. There are eight of each colour (including red). What is the least number you would have to pick, without looking, to be sure of selecting 3 red balls?

Out of four images which one is the odd one out?

Find out the missing number in the picture attached:

Can you find out who is the kidnapper in below Picture and why, Explain ?

Which is heavier: a ton of bricks or a ton of feathers?

Solve the puzzle by telling what does below picture means.

If you paint a brown house white it will become a white house. If the stoplight changes from red to green, then the light is green. So, if you throw a white shirt into the Red Sea, what will it become?