What does below rebus means ?

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

Here is what you have to do. You have to throw a ball as hard as you can but it must return back to you even if it does not bounce at anything. Also, you have nothing attached to the ball. There is no one on the other end to catch that ball and throw it back at you.

How will you do it?

Can you name some countries which do not have the alphabet 'A' in them?

What does Alexander the Great and Winnie the Pooh have in common?

If I put in one bird per cage, I have one bird too many. If I put in two bird per cage, I have one cage too many. How many cages and birds do I have?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

What does below Rebus say?

XLR8

What does this Rebus Picture means ?

Jack was having a candle light dinner with his girlfriend. Suddenly a cold gush of wind entered through the open window and three of the ten candles were extinguished. Assuming that none of the other candles were extinguished.

How many candles are they left with in the end ?