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anonymous

  • 5 years ago

six swimmers are competing in a race which of folowing can be used to find the number of ways the swimmers can place first,second,and third in the race?

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  1. anonymous
    • 5 years ago
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    You use a factorial: n! this is because there are 6 swimmers that can take 1st place, then 5 swimmer that can possibly take 2nd place etc. so you mult. 6*5*4*3*2*1 = 6! = 720

  2. anonymous
    • 5 years ago
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    only the questions asks who can take first second and third, so you stop at 4 6*5*4 = 120

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