Why is 6 afraid of 7?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

What can you hold in your right hand, but never in your left hand?

I am soft and cuddly that soothe your heart. But, If you pick my last name I am going to tear you all apart. Who am I?

I was speeding and ran through a stop sign, yet two traffic officers who were there do nothing about it.

why?

Three people enter a room and have a green or blue hat placed on their heads. They cannot see their own hat but can see the other hats.
The colour of each hat is purely random. They could all be green, blue, or any combination of green and blue.
They need to guess their own hat colour by writing it on a piece of paper, or they can write 'pass'.
They cannot communicate with each other in any way once the game starts. But they can have a strategy meeting before the game.
If at least one of them guesses correctly they win $10,000 each, but if anyone guesses incorrectly they all get nothing.
What is the best strategy?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

What happened when the wheel was invented?

John was a very careless driver, so his owner Jacob gave him an offer that he will get an incentive of Rs.30 for every bottle box he delivered without breaking it and he will be charged Rs.90 for every bottle box he broke. Jacob gave John 100 bottles-box to deliver. After delivery, Jacob paid John Rs.2400. How many bottles-box did John break?

Paul's height is six feet, he's an assistant at a butcher's shop and wears size 9 shoes. What does he weigh?