Mathematics for IGCSE & O level - Probability (Section 7 - No. 18)

If the odds of a horse winning a race are 1:3, what is the probability of the horse winning?

1/3

1/4

3/4

1/2

Odds of 1:3 means 1 win for every 3 losses. Therefore, 1 win out of a total of 1+3=4 outcomes, resulting in 1/4.