Can you find the key in the picture below?

Imagine you are in a room with no windows or doors. How will you get out?

The following alphametic has only one solution. Can you find it?
ENLIST + SILENT + LISTEN = ANAGRAM

PS: You may start the number from 0.

By removing one matchstick and adding one matchstick, can you convert the word "ZOO" to an animal name?

What can you catch but never throw?

Can you think of any three-dimensional shape that comprises of exactly two surfaces?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

With the help clues provided in the image, can you find the 5 digit key?

I look at you, you look at me I raise my right, you raise your left. What am I?

A professor thinks of two consecutive numbers between 1 and 10.
'A' knows the 1st number and 'B' knows the second number

A: I do not know your number.
B: Nor do I know your number.
A: Now I know.

What are the four solutions for this?