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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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Topic review (newest first)

bobbym
2011-10-15 23:15:02

Hi JonathanS;

You should be able to find many of them.

JonathanS
2011-10-15 21:48:17

ah k, got to google some algorithms for permutations, thanks!

bobbym
2011-10-15 19:32:17

Hi JonathanS;

There is some confusion here.

like to get the source code for the combination where order matters and no repeats.

When order matters it is called a permutation.

JonathanS
2011-10-15 15:06:08

Hello, I visited mathsisfun.com/combinatorics/combinations-permutations-calculator.html and would like to get the source code for the combination where order matters and no repeats.

The one that is n!/(n-r)!

I would be using it for a program I am making that outputs all possible tetrahedral molecules.

Thanks!

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