Question

If n(A) = 16, n(B) = 12 and n(AUB) = 20, find n(A ∩ B)

Answer 1

Answer:

$\box{n(A ∩ B) = 8}$

Step-by-step explanation:

n(A ∩ B) = n(A) + n(B) - n(AUB)

=》n(A ∩ B) = 16 + 12 - 20

=》 n(A ∩ B) = 8

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