Can you arrange four 9's and use at most 2 math symbols, to make the total 100?

I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

What occurs twice in a week, once in a year but never in a day?

I am a seven-letter word but if you remove four of my letters I will have one left. What word am I?

What kind of storm is always in a rush?

What does this Rebus Picture means ?

Why is it against the law for a man living in Delhi to be buried in Mumbai?

There is a family that live in a round house. The two parents go out for a movie and leave a babysitter to watch their son. They come back and the kid was not there. Some one kidnapped him. The maid said she was cleaning in a corner. The cook said he was making pizza. The babysitter said she was getting a board game. Who kidnapped him.

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

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?