What does below rebus means ?

What is the below Rebus indicate?

What is more useful when it is broken?

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

Can you make four (4) nines (9) equal 100?

Look at the picture and find out which square is not linked with any of the other squares.

He does not have any heart but still, He manages to live.
If you kill him, you will eventually die but yet you kill him.
He cannot run, who is He?

How can one talk without saying a single word?

Find out a multi-digit number that if multiplied by the number 9 or any of its multiplications products (i.e. 18, 27, 36, 45,..) will result in the multiplication factor repeated (n) number of times.

John is pretty weird. He likes toffees but hates chocolates. He loves books but never reads. He likes to build his troops in an online game but does not proceed with the war. He likes to go swimming but is afraid of water.

Seeking this behaviour, can you tell whether he likes balloons and parties?