What does the below image rebus riddle means ?

A network of 20 x 10 squares is given to you.

Can you calculate how many unique squares and rectangles can be formed combining two or more individual squares ?

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

what does this below rebus represent identXQQQQQME

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

I have no doors but I have keys, I have no rooms but I have space, you can enter but you can’t leave! What am I?

There’s a girl who has a large family. She has an equal amount of brothers and sisters, but each brother only has half as many brothers and sisters. What’s the correct amount of brothers and sisters?

I am green and found in the forest and have needles instead of leaves. What am I?
Hint 1: It can be used for Christmas decorations.
Hint 2: I have a strong, scent that is used in air fresheners.

I am an odd number. Take away a letter and I become even. What number am I?

A man fell off a smuggling boat into deep water. He could not swim and he was not wearing anything to keep him afloat. It took 30 minutes for the people on the boat to realize someone was missing. The missing man was rescued two hours later on the return trip. Why didn't he drown? Note:- He didn't know swimming, the sea was deep, and He wasn't holding anything