Tricky colour circles puzzle

Answer: 106

Solution:

 3rd equation :

(black circle+red circle)+(Green+black)*black =?

(8+2 )+(8+4)*8=?

10+12*8=106

Ans=106

Passed from father to son and shared between brothers, its importance is unquestioned though it is used more by others.

Answer: surname

Solution:

There are 20 people in an empty, square room. Each person has full sight of the entire room and everyone in it without turning his head or body, or moving in any way (other than the eyes). Where can you place an apple so that all but one person can see it?

Answer: Place the apple on one person's head.

Solution:

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Place the apple on one person’s head.

Who makes it, has no need of it. Who buys it, has no use for it. Who uses it can neither see nor feel it. What is it?

Answer: A Coffin.

Solution:

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A Coffin.

What do you call a fish with no eye’s?

Answer: Fsh.

Solution:

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Fsh.

You use me daily without knowing. The only time you acknowledge me is when you don’t understand me. What am I?

Answer: Language

Solution: