Question

Sejam A={1,2,3,4},B={2,4,6,8} e C={3,4,5,6}.Determine:

a)(A∪B)-C
b)C-A
c)(A-B)∩(C-B)
d)(A∩C)-A
e)(A∩B)∪(B-C)

Answer 1

U = União = Soma
U para baixo = Interseção = subtração
Logo:
a) (1,2,3,4,6,8) - (3,4,5,6) = {1,2,5,8}
b) {1,2,5,6,}
c) (1,3,6,8) - (2,3,5,8) = {1,2,5,6}
d) (1,2,3,4,6,8) - (2,3,5,8) = {1,4,5,6}