What does this Rebus Picture means ?

You have three orange, two pink and five purple balls in the drawer beside your bed. There is no electricity and the room is entirely dark. How many balls must you take out to ensure at least one ball of each colour at least?

A man is found dead in his bathroom naked with blood scattered all around him. The bathroom was locked from the inside and there is no trace of any struggle. There is nothing in the bathroom except his pant with the belt still around and his shirt. Also, the medic team can't find any incision in his body that may have been the reason behind so much blood loss.

The Police department is clueless regarding this murder mystery.
Can you?

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.

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?

How many triangles can you count in the figure given?

What 5-letter word typed in all capital letters can be read the same upside down?

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

A seven-year-old kid challenged his classmates that he can make the number one disappear by adding something to it.

How can he do that?

I look at you, you look at me, I raise my right, you raise your left. What am I?