How can a man go eight days without sleep?

Below rebus represent famous DiCaprio movie. Can you name it?

What common phrase is represented by the below lines

Easy going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Medium going:
Weak, 'I'm going.'
Tough, 'I'm staying.'

Tough going:
Weak, 'I can't do it, I'm staying!'
Tough, 'Let's get going.'

He digs out tiny caves and stores gold and silver in them. He also built bridges of silver and made crowns of gold. They are the smallest you could imagine. Sooner or later everybody needs his help, yet many people are afraid to let him help them. Who is he?

Why is it very easy to weigh a fish?

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

What is the end of everything?

When we see 2 but call 10?

How many bananas can you eat if your stomach is empty?

Can you discover the missing number in this series?

37, 10, 82
29, 11, 47
96, 15, 87
42, ?, 15