From: Michael Fellinger <m.fellinger@...>
Date: 2010-04-01T20:49:15+09:00
Subject: Re: Ruby solve classic math problem: make 56 from four 4s

On Thu, Apr 1, 2010 at 6:11 AM, Kelly Jones <kelly.terry.jones@gmail.com> wrote:
> A classic math problem asks "using only four 4s and any
> mathematical operation, come up with the number
> 56". "4!+4!+4+4" is one of probably several answers [1].
>
> I want to write a ruby program that solves the
> generalization: "given X number of the digit Y and a
> set of permitted mathematical operations/functions, can
> you come up with the number Z?"
>
> Has anyone already done this?
>
> [1] http://mathforum.org/ruth/four4s.puzzle.html

The first thing that came to mind was http://www.rubyquiz.com/quiz60.html
Not exactly what you want, but still good reading :)

> --
> We're just a Bunch Of Regular Guys, a collective group that's trying
> to understand and assimilate technology. We feel that resistance to
> new ideas and technology is unwise and ultimately futile.


-- 
Michael Fellinger
CTO, The Rubyists, LLC