Question

Dados os conjuntos A={4 5 6 7} B={4 6 8} C={5 7 9} e D={6 7} determine a)BUC b)(AUB) N C c)(B-A) N D

Answer 1

A) B = {4,6,8} + C = {5,7,9} = {4,5,6,7,8,9}
B) (AUB) = {4, 5, 6, 7, 8}N C = {5, 7}
C) (B-A) = {8} / N D = {}

Bom, eu entendi dessa forma.