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March 7th, 2017, 01:56 PM   #1
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From: Peja

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Permutations,variations and combinations

First of, we're talking no repetition.
So I thought I would just look these up when I get home, but I didn't find anything except finding the number of possible permutations, variations or combinations. I already know that part because of the formulas, but my teacher talks about some order of permutations and finding the n-th permutation.
Is there some sort of rule of ordering permutations?
For example if we had:
$\displaystyle 1 2 3 4 5$
what would be the next permutations and why?
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March 7th, 2017, 03:51 PM   #2
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There is no general rule for ordering permutations. You can make up your own.
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March 13th, 2017, 01:33 PM   #3
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Eh, sorry for the late reply, had no internet.

So I guess the writers of my textbook made one up and didn't write anything about it?
I mean most exercises there are about finding the n-th permutation (or combination) which wouldn't make any sense if there wasn't one defined.
Well I'll just cling on to the pattern I found.

Thanks for the reply anyway.
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