What does below rebus means ?

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?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

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

If you're 8 feet away from a door and with each move you advance half the distance to the door. How many moves will it take to reach the door?

There were two grandmothers and their two granddaughters.
There were two husbands and their two wives.
There were two fathers and their two daughters.
There were two mothers and their two sons.
There were two maidens and their two mothers.
There were two sisters and their two brothers.
Yet there are only six, who are buried here,
All are born legitimate and relationships clear.
How can this happen?

How can you drop a raw egg from a height onto a concrete floor without cracking it?

Can you move 2 matchsticks to form four equal sized squares.

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

How is the moon similar to a dollar?