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

- 1/5
- 2/5
- 3/5
- 4/5

**Answer**

n(S) = ^{5}C_{2}

n(E) = ^{2}C_{1} + ^{2}C_{1}

p(E) = n(E)/n(S)

**The correct option is B.**