Solution:

A Kiwi

Solution:

3

The total sum is always 17.

Solution:

When you are using roman numerals.

Solution:

Letter 'O'

Solution:

The door hinges are on the opposite side.

Solution:

The watch on the left is a toy. The minute arm is too long, so it can't pass around the face when it moves.

Solution:

9

4x + 21 = 57
4x = 36
x = 9

Solution:

It's the Man with the flash light.

Solution:

A Bank

Solution:

Every segment in the new circle moves 90 degrees clockwise.

Solution:

The clock has the letter B instead of the number 8.

Solution:

838

Solution:

41

There are 6 people alive, plus you and there are 34 people dead. Making it a total of 41 people in the room.

Solution:

Fire

Solution:

11

10 people have pair of eyes, so 20 eyes.
So we have 10 people in addition to the man who dropped the book. She cannot look at herself, but she is still in the Church.

Solution:

The girl in the red shirt.
As she is eating a sandwich that looks like it's years old, and that might kill her.

Solution:

The first one is as she is wearing the badge of a man.

Solution:

The woman is not wearing a necklace.

Solution:

Chilwell can go through as all the person whose name contains even number of letters can go through the door.

This is a classic green glass door riddle.

Solution:

2

2^2^(2 * 0)^2
2^2^(0)^2
2^2^0
2^1
2