Question

S={bilangan cacah yang kurang dari 18},A={×|× bilangan yang habis dibagi 3,× € [element] s, B{y|y>8,bilangan ganjil },y € [element] S}.AUB adalah

Answer 1

S={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17}
A={3,6)
B={1,3,5,7,13,15,17,19}
AUB={1,3,5,6,7,13,15,17,19}

Answer 2

S={0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17}
A={3,6,9,12,15,18,21,....}
B={9,11,13,15,17,19,21,....}
Jadi AUB={3,6,9,11,12,13,15,17,18,19,21}