Can you count the number of matches in the picture below ?

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

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

You are in a land where thirty men and two women were dressed in classic black and white dresses.
They begin to fight as soon as any of them move.

Where are you?

Count the number of squares in the picture below.

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

What has many keys but can’t open a single lock?

A mad serial killer kidnaps people and forces them to play the game of 2 pills with them, In this game, there are pills in the table and one of them is normal pill while the other one is deadly poisonous.
The victim will choose one pill and the killer will pick the other pill and both simultaneously will swallow the pill with water.
victim dies every time.

One day the serial killer kidnaps the Joseph and forces him to play the same game with him.

Joseph solves the mystery of the two pills and remains alive.

Explain?

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

Solve the following series:
AZ, GT, MN, __, YB