Can you replace the question mark with the correct number in the below table sequence?

I am dry when I go inside, but wet when I am pulled outside.
The longer I am inside, the stronger I get
When I am completely out, I am wet and I literally sag
Who am I?

You may enter, but you may not come in. I have space, but no room. I have keys, but open no lock. What am I?

A charming young lady was approached by a kind looking old woman in a restaurant. The old woman said to her, 'You look exactly like my younger daughter. Sadly she passed away a couple of months back. Could you do me a favor and say 'Goodbye, mother' with a kind smile on your face when I leave?

The young lady agreed for the same and said, 'Goodbye, mother' when the old woman left. Soon after, she got the most disengaging shock of her life.

Can you guess what the shock was?

Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

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

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

It belongs to you, but other people use it more than you do. What is it?

The dirtier I get, the whiter I look. Who am I?