Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

P is the father of Q and S is the son of R. T is the brother of P and has a daughter U. If R is the sister of P, then what is the relation between U, Q and S?

You knock a Table over in the library, and suddenly 20 eyes are looking at you.

If we add four times the age of John four years from now to five times his age five years from now we get ten times his current age.

How old will John be two years from now?

This is a picture puzzle. You have to guess the name of the movie that can be related to the picture.

Look at this sequence from top to bottom. What is the next number in the sequence?
1
11
21
1211
111221
312211

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

What is the word or phrase?

Using four sevens (7) and a one (1) create the number 100. Except for the five numerals, you can use the usual mathematical operations (+, -, x, :), root and brackets ()

I am beautiful, up in the sky. I am magical, yet I cannot fly. To people I bring luck, and to some people, riches. The boy at my end does whatever he wishes. What am I?