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

Replace the question mark with the correct number in below Picture:

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

What number should come in place of the question mark below?

I am Huge on Sunday and Saturday.
I am small from Tuesday to Thursday.
I do not exist on Monday and Friday.
Who am I?

What work can one never finish?

Two-person want to cross a river. Only one boat is present on the riverside that can carry only one person at a time.

However, they still manage to cross the river. How is it possible?

Transform the word THINK into BRAIN while changing only one letter at a time in a manner that each of the word in the process is a real word!!!

Can you solve below mathematical equation?

2^1234 - 2^1233

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?