Question

se n(a)=728, n(AUB)=1234, n(A∩B)=321, calcular n(b)

Answer 1

Explicação passo-a-passo:

n(A U B) = n(A) + n(B) - n(A∆B)

1234 = 728 +n(B) - 321

1234 - 728 + 321 = n(B)

827 =n(B)

@prof.brunoaazevedo