What Adam and Eve do not have but the rest of the people have?

Rahul decided to meet Simran so he boards a local train from Bombay station. Just after the station, there is a 1km long tunnel. The train starts and is now accelerating. Rahul is a claustrophobic guy, so what is the best position for him to sit?

If 5 cats catch 5 mice in 5 minutes, how long will it take one cat to catch a mouse?

A man is trapped in a room. The room has only two possible exits doors. Through the first door there is a room constructed from magnifying glass. The blazing hot sun instantly fries anything or anyone that enters. Through the second door there is a fire-breathing dragon. How does the man escape?

You need to arrange three 7 and mathematical symbols to form number 1?

James bond was pushed out of an aeroplane without any parachute.
He survived, How come?

Double it and multiply it by 4. Then divide it by 8 and you’ll have it once more. What number is it?

A person is found murdered in his Chamber. When the crime scene is investigated, the Investigator find out that there is a calendar on which the victim has written a few numbers with his blood. The numbers are 4, 11, 11 and 4.

There are four suspects in the murder, John, Jacob, Anna and Lee. Can you find out who is the murderer?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

Replace the question mark with the correct number.