Question

Sendo: A={1,2,3,4} B={1,2,5} C={1,5,6,7} calcule
A)AuB
B)(AnB)u
C)(AnC)u(Bn)
D)(A-B)nc
E)(B-C)nA
F)(AnB)-(BnC)

Answer 1

a){1, 2, 3, 4, 5}
d){ }
e){2}
f){2}

obs: as opçoes"b, c, " estão incompletas.