Each of the possible five outcomes of a random ex- periment is equally likely. The sample space is

(a,

b, c,

d, e). Let 4 denote the event

(a, b), and let 8 denote the event (c,d,e). Determine the following:

(a) P(4)

(b) P(B)

(c) P(A')

(d) P(AUB)

(e) P(B)