Thirty runners compete in a cross country race. your school has five runners in the race. what is the probability that three runners from your school place first, second, and third.

If all runner have an equal chance, the probability of your school placing 1st, 2nd, and 3rd would be 1/30 for 1st place, 1/29 for 2nd place, and 1/28 for 3rd place. This would be individually. To find the probability of all 3 of these things occurring, you multiply these separate probabilities together: 1/30 x 1/29 x 1/28 = 1/24360 chance of this happening.