What is the probability that Company R's advertisement will be one of the first two be shown during the first commercial break?
Options:
(A)  1/ 225
(B)  1 / 30
(C)  1 /15
(D)  2 / 15
(E)  4 /15 Let's think first. Stream of consciousness:
user
R 1/15 + (14/15) * 1/14 = 2/15
So, the answer is (D).
assistant