Mathematics, 09.12.2021 05:30 BeautyxQueen

If n(A) = 63, n(B) = 17, and n(A ∩ B) = 9, find n(A ∪ B).

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If n(A) = 63, n(B) = 17, and n(A ∩ B) = 9, find n(A ∪ B)....

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