Question

Se n(A)=728 n(AVB)=1234 n(A/\B)=321 calcule n(B)

Answer 1

Resposta:

n(B)=827

Explicação passo a passo:

n(AUB)=n(A)+n(B)-n(A∩B)

1234=728+x-321

1234=407+x

x=1234-407

x=827