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Mathematics, 27.04.2020 02:08 hhaacahh612

If n(B) = 15, n(A ∪ B) = 28, and n(A ∩ B) = 3, find n(A).

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If n(B) = 15, n(A ∪ B) = 28, and n(A ∩ B) = 3, find n(A)....
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