14 The probabilities that three football teams, A, B and C, win their next game are \( \frac{1}{2}, \frac{1}{4} \) and \( \frac{1}{5} \) respectively.
Find the probability that
(a) none of the three teams win,
Answer (a)
[2]
(b) one of the three teams wins.
Answer (b)
[3]