n(A)=231 n(B)=312 n(A U B)=321 n(A n B)= ... Ini soal tentang Himpunan

n(A)+n(B) - n(A n B) = n(A u B)
n (A n B) = n(A) + n(B) - n(AuB)
     = 231+312 - 321
   = 222

N(a)+n(b)-n(a n b)= n( a u b) 231+312-n(a n b)= 321 n(a u b)= 543-321=222