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Math Help - Permutations and combinations

  1. #1
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    Permutations and combinations

    In a school editorial photgraph, 5 teachers have to be seated in the first row, 4 girls in the second row and 6 boys in the third row. How many different ways can they be arranged if the principal has a fixed seat int he first row?
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  2. #2
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    Re: Permutations and combinations

    That's pretty straightforward, isn't it? Assuming that the principle is NOT one of the teachers, this is simply a matter of determining how many ways you can seat 5 people, how many ways you can seat 4 people, how many ways you can seat 6 people, and multiplying them together.
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