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

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside.
The man said, "Oh! I am really sorry, I thought this was my room."
He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man.
What made her suspicious of that man? He might have been genuinely mistaken.

Can you find a five letter word that is left with only two letters if one is removed?

Can you find out who is the kidnapper in below Picture and why, Explain ?

I am a prime number.
The double of myself is equal to the square of me.

which number am I?

Can you find out the missing number in the grid?

A train full of passengers goes through a tunnel. When the train comes out from the other end, there is no single person on the train.

How did it happen?

Make a sentence consisting of three words that have the whole alphabet.

Decode the movie name from the below picture?

You have a thousand Re. 1 coins with you. You have ten bags with you and you can put any number of coins in each of the bags. The condition is that if someone asks you for any amount between 1 and 1000, you must be able to give that amount by just giving the bag (you are not allowed to open the bag and give coins).

How will you do it?