Can you count the number of quadrilaterals in the picture below?

Can you find out the number of the parking space in which the car is parked?

There is one four-digit whole number n, such that the last four digits of n2 are the original number n

You need to climb ten stairs. At every stair, you can either take one step up or you can jump two steps up.

In how many different ways you can climb 10 stairs?

Your last good ping-pong ball fell into a narrow metal pipe embedded one foot deep in concrete.
How can you get it out undamaged, if all the tools you have are your tennis paddle, shoe laces, and plastic water bottle, which does not fit into the pipe?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

I can be cracked, made, told, and played. What am I?

Can you count the number of triangles inside a triangle?

Buy me, smell me or deliver me, I do not change.

Who am I?

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.