Question

dados os conjuntos A= {2,3,9},B={1,3,8,4} e C={1,3,5,7,9}

Answer 1

a) {1, 2, 3, 5, 7, 9 }
b) {3}
c) {1, 2, 3, 4, 8, 9}
d) {1, 2, 3, 9}