Question

Let n(A) = 31, n(B) = 20 and n(
A B) = 6, find :
(1) n(A - B) (ii) n(B - A) (iii) n(AUB)​

Answer 1

Answer:

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Answer 2

Answer:

n(A-B) = 11

n(b-a) =-11

n(AUB) = 0