Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

A father's child, a mother's child, yet no one's son.

Who am I?

Name the three-letter word that can complete the below words:

A) L O _ _ _ E
B) E D U _ _ _ E
C) _ _ _ E R
D) _ _ _ T L E

You are in a room with no metal objects except for two iron rods. Only one of them is a magnet.
How can you identify which one is a magnet?

Jigsaw captured 100 people and make them stand in a circle and all these people are labelled as Person1, Person2, Person3... Person100. He made them play a crazy game in which Person 1 shot Person 2 and pass the gun to the next person and so on until one stands alive.

Which person will survive in the end?

See the given image carefully. What you have to do is move the blue checkers in the position of the black checkers and vice versa. You are only allowed to move the checker to an adjacent empty space. Do it in the least possible moves.

How can you spell "White of an egg" in one word?
Hint: I know you can spell coke, poke, and joke.

You can see three almost identical images below. Can you spot the odd one out from them?

10+10 and 11+11 can give you the same answer.

Explain how?

Which tank will fill first?