Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

A Detective reviewed the information they had on the case so far.

A lady named 'Caterina' was found shot and they already had a list of suspects - Ankit, Tarun, Harish, Manoj and Manish.
The killer is a fan of challenges him by leaving notes ad various places.
* The first was found in a toilet room.
* The second was found in an art room.
* The third was in a restroom.
* the fourth in an underwater room.
* The fifth at the no-smoking room.

All of the notes read the same thing, 'The clues are where you find the notes.' Yet, nothing was found at any place the notes were.
Detective the genius, immediately solved the case.
Who was the killer?

You are an expert on paranormal activity and have been hired to locate a spirit haunting an old resort hotel. Strong signs indicate that the spirit lies behind one of four doors. The inscriptions on each door read as follows:

Door A: It's behind B or C
Door B: Its behind A or D
Door C: It's in here
Door D: It's not in here

Your psychic powers have told you three of the inscriptions are false, and one is true. Behind which door will you find the spirit?

If,

6 / 7 = 2
3 / 9 = 7
8 / 2 = 6

Then

4 / 5 = ?

Something Extraordinary happened on May 6th 19778 at 12:34am what was that?

Forwards I am heavy, backward I am not. What am I?

Why did Buffon take the goal with him after every Juventus match?

Three doctors said that Bill was their brother. Bill says he has no brothers. How many brothers does Bill actually have?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?