Question

7. Let U be the universal set, and A and B be any two sets. If n(U) = 20, n(A) = 12, n(B) = 4 and
n(
AB)' = 17, find the following.
(i) n(
AB)
(ii) n(AUB)
(iii) n(A - B
(iv) n(B - A)​

Answer 1

Answer:

u can find ur answer by applying this formula:

n(A-B)=n only A=n(A) -n(A intersection B)

hope this will help u

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