jika n(A U B)=20,n(A)=12,n(B)=11,maka n(A^B)=
Matematika
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Pertanyaan
jika n(A U B)=20,n(A)=12,n(B)=11,maka n(A^B)=
1 Jawaban
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1. Jawaban nabnabs
[tex]n(A\cap B)=n(A)+n(B)-n(A\cup B)\\=12+11-20\\=3[/tex]