Question

sendo A={1,2} B={2,3} C={3,4} , determine:

a) (AUB) U C
b) (AUB)- (A ∩B)
c) A ∩B

Answer 1

AUB={1,2,3} BUC= {2,3,4}
AUB={1,2,3} A(intersecção)B={2}
A(intersecção)B={2}