Question

dados os conjuntos A={2,4,8,12,14}, B={5,10,15,20,25} e C={1,2,3,18,20}, determine (a-b) U (c-b)

Answer 1

A-B = {2,4,8,12,14}

C-B = {1,2,3,18}

(A-B) ∪ (C-B) = {1,2,3,4,8,12,14,18}