Replace the question mark with the correct number.

My cousin lives in one story house in Antarctica. His house is made the of-of sandstone. what is the color of stairs?

Can you find a number that lies one third of the distance between 1/3 and 2/3?

What does below chemistry rebus means?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

Vin Diesel is pulling a theft and has planned to run away with all the cash kept in the safe. But the only way to open the safe is the 13 character password. He has a set of five clues given to him by a trustworthy source.

Exactly two of the below statements are false.
The password is contained within this sentence.
The password is not in this hint.
The password is within only one of these statements.
At least one of the above statements is a lie.

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

I have a head like a cat and feet like a cat, but I am not a cat. What am I?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?