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Mathematics 20 Online
OpenStudy (anonymous):

This weekend 13 athletes on the track-and-field team are competing in the hurdles event at a regional track meet. How many different ways can the athletes place 1st, 2nd, and 3rd?

OpenStudy (anonymous):

3 athletes are to be chosen from 13 and order matters, so we use permutations. 13P3 = 13!/(13-3)! = 1716 ways

OpenStudy (anonymous):

oh! ok that makes sense! thank you!

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