What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

There is something which you can be arrested for attempting but not for successfully completing.

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 ?

Count the number of balls in picture below:

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

I am thinking of a five-digit number such that:
The first and last digits are the same, their submission is an even number and multiplication is an odd number and is equal to the fourth number. Subtract five from it and we obtain the second number. Then divide into exact halves and we get the 3rd number.

What number I am thinking of?

They do not possess flesh or feathers or scales or bone
But still, they are blessed with fingers and thumbs of their own.

A man who was outside in the rain without an umbrella or hat didn’t get a single hair on his head wet. Why?

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?