Question

como se resuelve esto plis

Answer 1

A= { 12, 14, 16, 18 }

B= { 2, 3, 5, 7, 11, 13, 17}

AUB = { 2, 3, 5, 7, 11, 12, 13, 14, 16, 17, 18}

A-B = { 12, 14, 16, 18}

n(AUB)= 11

n(A-B) = 4

entonces:

n(AUB)+ n(A-B)= 15