Mathematics, 10.06.2021 05:40, sofiaarmy12

If n(A)=12, n(B)=15, and n(A∩B)=∅, then what is n(A∪B)

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If n(A)=12, n(B)=15, and n(A∩B)=∅, then what is n(A∪B)...

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