Jika n(A u B) = 20, n(A) = 12, n(B) = 11 maka n(A n B) =
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Pertanyaan
Jika n(A u B) = 20, n(A) = 12, n(B) = 11 maka n(A n B) =
1 Jawaban
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1. Jawaban kuolitee
n(A u B)=n(A)+n(B)-n(A n B)
20=12+11-n(A n B)
n(A n B)=3