How can a man go eight days without sleep?

I come in different shapes and sizes.
Parts of me are curved, other parts are straight.
You can put me anywhere you like,
but there is only one right place for me.
What am I?

Identify the movie name through below Rebus containing Pi Mouse and coconut tree..

John enters a small room. The Door Closes.
When the door opens, John is in a larger room.

Explain?

The husband and wife were jogging in the morning. To match every two steps of the husband, the wife required three steps. If Both of them start with the here right foot. After how many steps do their left foot be together?

You see a mathematical expression in the picture. Can you think of a movie that this expression refers to?

When it is alive we sing, when it is dead we clap our hands. What is it?

What type of tree can I carry in my hand?

Given below is simple addition with a defined pattern pattern:
7 + 7 = 2
8 + 8 = 4
8 + 5 = 1
6 + 9 = 3
10 + 11 = 9

Can you analyze the pattern and find out the answer for:

4 + 9 = ?

What is the probability of choosing the correct answer at random from the options below?

a) 1/4
b) 1/2
c) 1
d) 1/4