Question: A veterinarian assigned to a racetrack has received a tip that one or more of the 12 horses in the third race have been doped.

A veterinarian assigned to a racetrack has received a tip that one or more of the 12 horses in the third race have been doped. She has time to test only 3 horses. How many ways are there to randomly select 3 horses from these 12 horses? How many permutations are possible?

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