The probability that a man wins a race is 0.8. In four different races, what is the probability that he wins:
(i)all races;
(ii)no race
(iii)at most 3 races?
A class consists of 5 girls and 10 boys. If a committee of 5 is chosen at random from the class, find the probability that:
(i) 3 boys are selected;
(ii) at least one girl is selected.
