If n(A)=7, n(B)=13 and n(A∩B)=4, than n(A∪B)=?​

Question

If n(A)=7, n(B)=13 and n(A∩B)=4, than n(A∪B)=?​

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Sadie 2 weeks 2021-09-11T11:29:03+00:00 1 Answer 0 views 0

Answers ( )

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    2021-09-11T11:30:38+00:00

    Answer:

    n(A∪B)=16

    Step-by-step explanation:

    as we know

    A∪B=A + B – A∩B

    and n(A∪B)=n(A) + n(B) – n(A∩B)

    =7+13-4=16

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