Re: [MLUG] N-Queens Problem Solver

[Stephen Montgomery-Smith <EMAIL:PROTECTED>]

Mike Miller wrote:
> On Fri, 18 Apr 2008, Stephen Montgomery-Smith wrote:
>
> > Here is a math problem I worked on when I was a student.  Show that
> >
> > N
> > Sum (N choose i) x(x+i)^(i-1) y(y+n-i)^(n-i)  =  (x+y)(x+y+n)^(n-1).
> > i=0
>
>
> Does n = N ?

Yes.

> Before i make a real effort I want to be sure because it kinda looks 
> like maybe you copied my "N" and then typed "n" when you meant "N".
>
> If by "student," you meant "grad student," then maybe I shouldn't even 
> try, but if you meant high school student, then I probably have some 
> hope of succeeding.

I was an undergraduate.  But it did take me about six months to figure 
it out.


> Mike
>
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