Question

1. If n(A) = 15, n(AU B) = 29, n(An B) = 7,
then n(B) = ?​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

n(A U B ) = n(A) + n(B) - n(An B )

29= 15+ n(B) - 7

29= 8+ n(B)

21 = n(B)