IF E IS THE SET{1,2,3,?...19,20}and A,B,AND C ARE SUB SET OF E SUCH THAT A={multiple of five},B={multiple of four},C {multiple of three}.list the element of A,B,C?B.findANB,ANC,BUC,?C. using your result in B show that(AUB)U(ANC)=AN(BUC)?
huh? You don't know the multiples of 5?
A = {5,10,15,20}
Now figure B and C, and then do the unions and intersections.
Show what you come up with