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anonymous

  • one year ago

In how many ways can a teacher arrange 10 students in the front row if there are 60 total students?

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  1. sloppycanada
    • one year ago
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    Combinations, fun. \[\frac{ n! }{ r!(n-r)! }\] Is the equation you want to use.

  2. anonymous
    • one year ago
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    can you explain how you get r and n please? thank you

  3. butterflydreamer
    • one year ago
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    "n" = set size -> so basically the total number of items in the sample "r" = subset size -> the number of items to be selected from the sample

  4. anonymous
    • one year ago
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    \[60!/10!(60-10)!\] ? @butterflydreamer

  5. butterflydreamer
    • one year ago
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    yepp

  6. anonymous
    • one year ago
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    I got 7.41837979E11 is that correct? @butterflydreamer

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