If 21x = 79x, what is the value of x?

What do you answer even though it never asks you questions?

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?

How can a man go eight days without sleep?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

If a wheel has 54 spokes, how many spaces are there between the spokes?

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

The host of a game show offers the guest a choice of three doors. Behind one is an expensive car, but behind the other two are goats.
After you have chosen one door, he reveals one of the other two doors behind which is a goat (he wouldn't reveal a car).

Now he gives you the chance to switch to the other unrevealed door or stay at your initial choice. You will then get what is behind that door.

You cannot hear the goats from behind the doors, or in any way know which door has the prize.

Should you stay, or switch, or doesn't it matter?

The Little ant seems to be always confused. Do you know why?

You are given four tennis balls and asked to arrange those balls in a manner that the distance between each one of them is exactly equal. How will you do it?