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

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

Can you find out a way through which you can make five squares out of the given figure by moving just six match sticks?

What does this mean?

CCCCCCC

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

It was a dark stormy night and a couple were in a car driving madly to a city. The car broke down and the husband had to go get help from someone who spoke his language. He was afraid to leave his wife alone in the car so he locked the car before leaving. When he came back, the car was in the same state as he had left it but his wife was dead, there was blood on the floor and there was a stranger in the car. What happened?

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 woman lives in a Tall building thirty-six floors high and served by several elevators which stop at each floor going up and down. Each morning she leaves her apartment and goes to one of the elevators. Whichever one she takes is three times more likely to be going up than down. Why?

A bomb exploded in a room full of married couples and no one died. How?

There are people and strange monkeys on this island, and you can not tell who is who (Edit: until you understand what they said - see below). They speak either only the truth or only lies.
Who are the following two guys?
A: B is a lying monkey. I am human.
B: A is telling the truth.