Five horses are in a race. Mr A selects two of the horses at random and bets on them. The probability that Mr A selected the winning horse, is
(a) 4/5
(b) 3/5
(c) 1/5
(d) 2/5
The correct option is (d) 2/5.
Explanation:
The probability that Mr A selected the loosing = 4/5 x 3/4 = 3/5
The probability that Mr A selected the winning horse = 1 - 3/5 = 2/5
