Math
posted by Roger on .
3 questions if you can help me.
1. Calculate the number of subsets and the number of proper subsets for the set.
{x|x is a day of the week}
2. Let U = {q, r, s, t, u, v, w, x, y, z}
A = {q, s, u, w, y}
B = {q, s, y, z}
C = {v, w, x, y, z}. List the elements in the set.
(A ¿ B) (A ¿ C)