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OpenStudy (anonymous):
Twenty students are in the final for a Math Olympiad. How many ways can they finish in first, second, and third
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OpenStudy (anonymous):
hey i dont even get the ques. its too confusing about different thinking ways
OpenStudy (rock_mit182):
Id like to know the answer too..
OpenStudy (anonymous):
I wonder if permutation can help with this problem?
OpenStudy (rock_mit182):
i would guess is 20 * 19 * 18 but the reason is not evident to me..I mean conceptually
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