Question

Let A and B two set such that n(A)=20 n(AUB)=4 find n(A - B)

Answer 1

If n(A)=20

IF n(AUB)=4

then (AUB`)=20-4

n(B)=16

So,n(A-B)=20-16=4

HOPE THIS HELPS..

Answer 2

Answer:

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