Replace the question mark with the correct number in the below-given picture?

During an experiment, a guy throws a bouncy ball from a 100 feet tall building. The ball has a specific characteristic. Every time it hits the ground, it bounces up halfway.

How many bounces do you think the ball will make before it comes to a stop ?

Can you move 2 matchsticks to form four equal sized squares.

What has to be broken before you can use it?

Why do people go to bed?

I am the beginning of everything, the end of everywhere. I'm the beginning of eternity, the end of time and space. What am I?

In the four images below, can you find the odd one out?

The below given figure comprises of a pattern through which you can determine the missing letter. Can you push your mind to find the pattern and add the missing letter?

I have a hole in my back and legs I lack.
I live where I can’t breathe and I eat without teeth.
What am I?

What brings you down but never up?