
Posted by Moby Dick
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on 20/6/2009, 8:01 am, in reply to "Re: Singing Competition"
> 3 1980 5940 7,2,2
Shouldn't that 3 above should be 6?
(%i2) permutations({a,b,c});
(%o2) {[a,b,c],[a,c,b],[b,a,c],[b,c,a],[c,a,b],[c,b,a]}



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