Question

Considerando os conjuntos A={1,2,5}, B={1,3}, C={5,6,7,8} e D={7,8,9}, Determine:
a) A ∪ B
b) A ∪ C
c) D ∪B
d) C ∪ D
e) (A∪B)∪C
f) (B∪C)∪D
g)(A∪D)∪B
h)(C∪A)∪(D∪B)

Por favor, me ajudem!

Answer 1

a) {1,2,3,5}
b) {1,2,5,6,7,8}
c) {1,3,7,8,9}
d) {5,6,7,8,9}
e) {1,2,3,5,6,7,8}
f) {1,3,5,6,7,8,9}
g)1,2,3,5,7,8,9}
h) {1,2,3,5,6,7,8,9}