I am an odd number. Take away a letter and I become even. What number am I?

How could a baby fall out of a twenty-story building onto the ground and live?

It has horns but can’t beep. It is like to bleat but It is not a sheep. What is it?

A man had five children. He had $100 with him to give to his children. He decided to start with the youngest child and then give $2 more than each younger child to his next elder child.

For example, if he gives $x to the youngest child, he will give $(x+2) to the next one, $[(x+2) + 2] to the next one and so on.

Can you find out how much did the youngest one receive?

Why Aeroplane windows are round?

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?

The person who makes it has no need for it. He who purchases it does not use it. The person who does use it does not know they are. What is it?

A word I know,
Six letters contain,
Subtract just one,
And twelve is what remains.

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?

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.