Question

Work the following problem, similar to number 19 from section 1.1 of your text.
Let U={1,2,3,b,c,y,z} be a universal set with subsets Y={1,b,c,y}, X={c,y,z}, and A={1,2,c,z}.
Another subset of U is given by S={z}.

Which of the following sets are needed to express the set {S}?
A. A
B. Y
C. X
D. A'
E. Y'
F. X'