What does this rebus puzzle means ?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

John is found dead in a bare field. Nobody killed John,
John did not commit suicide.

Inspector Jacob found a bag just a few meters away from John which could save his life. What was in the bag?

What kind of band never plays music?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

A shepherd had 18 sheep, out of which, all but ten died.

Can you tell us how many sheep was he left with?

It's a test that will check your IQ.

Suppose you have one 11 minute hourglass and one 13 minute hourglass.

Can you measure exactly fifteen minutes using them ?

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles, and 2 empty bowls. He then says, 'Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die.'

How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?

If I remove one from eleven it becomes Ten and if I remove one from nine also becomes Ten. How?