Which number should replace the question mark?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

Yesterday I fell from 30 feet high ladder but I don't get hurt. Why?

Can you find out the remainder when 3^300 is divided by 5?

You are driving down the road in your car on a wild, stormy night, when you pass by a bus stop and you see three people waiting for the bus

An old lady looks as if she is about to die.
An old friend who once saved your life.
The perfect partner you have been dreaming about.
Knowing that there can only be one passenger in your car, whom would you choose?

I throw two dice simultaneously.

What is the probability of getting a sum as 9 of the two numbers shown?

If you say my name, I will no longer exist. What am I?

What's a single-digit number with no value?

Guess the hidden movie name?

I have branches, but no fruit, trunk or leaves. What am I?