SOLUTION: how many ways can ten applicants line up for a job interview

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Question 448029: how many ways can ten applicants line up for a job interview
Answer by solver91311(24713) About Me  (Show Source):
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10 ways to pick the first guy in line. For each of those ways, 9 ways to pick the 2nd guy, hence 10 times 9 = 90 ways to pick the first two guys. For each of those 90 ways, 8 ways to pick the third guy, so 720 ways to pick the first three guys. And so on...

Hence:




John

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