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January 29th, 2012, 11:27 AM   #11
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Re: Permutation and combinations (seating)

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I don't know what is meant by 5 secured seats . . .
My guess is that means the seats cannot be moved.
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January 30th, 2012, 12:29 AM   #12
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Re: Permutation and combinations (seating)

Order matters so it's a permutation. The empty seat has nothing to do with it and there's no stipulation about whether some particular chair has to remain empty.

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January 30th, 2012, 03:35 AM   #13
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Re: Permutation and combinations (seating)

I like how you sound so definitive, Erimess. lol.
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January 31st, 2012, 12:18 AM   #14
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Re: Permutation and combinations (seating)

Well... LOL. I just have to hope my definitiveness means I'm right. (If I'm not too sure, I do try to be honest about that.)
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January 31st, 2012, 01:29 AM   #15
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Re: Permutation and combinations (seating)

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Originally Posted by Erimess
Order matters so it's a permutation.
An application of the factorial accounts for all possible orderings, if I'm not mistaken.

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January 31st, 2012, 10:48 PM   #16
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Re: Permutation and combinations (seating)

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Originally Posted by greg1313
Quote:
Originally Posted by Erimess
Order matters so it's a permutation.
An application of the factorial accounts for all possible orderings, if I'm not mistaken.

Well, yes. Habit. If it had been 4 chairs I probably would've done it that way. (I can think of having extra people, but can't manage to turn it around and think of extra chairs. :P )
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