Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

For an extra income, John decided to work at a Hotel for one hour daily. The manager offers him that they will pay him $11 after every 11 days.
However, John offered a different proposition to the manager. The offers stand as:
He will be paid just a penny on his first day.
Two pence will be paid on the second day,
Four pence will be paid on the third day.
And so on till the 11th day.

Should the Hotel manager accept his offer?

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

In which direction should the missing arrow point?

I cannot talk, but I always reply when spoken to. What am I?

What always comes into a house through the keyhole?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?

What work can one never finish?

Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

Find The Odd One Out

1. FLOW
2. SNIP
3. TRAP
4. DRAW
5. BACK