Question

please tell me what's the meaning of this with an example..​

Answer 1

Answer:

A minus means difference

B intersection C

it means that after finding Intersection C subtract A set from it...

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Answer 2

Hello mate, here is your answer:-

This is a sign of intersection between B and C in this expression.

This expression is equal to

(A - B) U (A - C)

HOPE THIS WILL HELP YOU...!