Matematika

Pertanyaan

n(aub)=45,n( a)=27,n(aub)=10,n(b)=...

1 Jawaban

  • Himpunan
    Matematika VII

    n(A U B) = 45
    n(A) = 27
    n(A /\ B) = 10
    n(B) = ?

    n(A U B) = n(A) + n(B) - n(A /\ B)
    45 = 27 + n(B) - 10
    n(B) = 45 - 27 + 10

    Jadi n(B) = 28

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