Question

If n (A) - 15, n (AUB) - 29, n (
AB) = 7 then n (B) = ?
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Answer 1

Answer:

n(A) = 15

n(AUB) = 29

n(AnB) = 7

29 = 15+n(B)-7

29 = 8 +n(B)

21 = n(B)