In a race, the odds in favour of horses A, B, C, D are 1 : 3, 1 : 4, 1 : 5 and
1 : 6 respectively. Find probability that one of them wins the race.
∴ Probability that at least one of them wins is given by
In a horse race the odds in favour of three horses are , .The probability that one of the horse will win the race is