Respostas

2014-03-04T11:42:03-03:00
A={0,2,4,6,8}
B={3,6,9,12,15,18}
C={1,2,3,6,9,18}

AUB= {0,2,3,4,6,8,9,12,15,18}
(AUB) - C= {0,4,6,8,12,15}

n (AUB)-C= 6

Portanto alternativa B.
2 5 2