Re: [math-fun] xkcd points out dangers of math fun
On 12/15/07, Steve Witham <sw@tiac.net> wrote:
Here's a comic with an interesting random-walk problem:
Apparently quoted from Google Labs aptitude test --- On an infinite square lattice with equal unit resistances along each edge, find the resistance between two nodes at a knight's move from one other. I got an extraordinary answer for this --- has anybody else had a go at it? WFL
On 12/16/07, Fred lunnon <fred.lunnon@gmail.com> wrote:
On 12/15/07, Steve Witham <sw@tiac.net> wrote:
Here's a comic with an interesting random-walk problem:
Apparently quoted from Google Labs aptitude test --- On an infinite square lattice with equal unit resistances along each edge, find the resistance between two nodes at a knight's move from one other.
I got an extraordinary answer for this --- has anybody else had a go at it? WFL
Customary apologies, everybody --- elementary arithmetic slip. Doesn't look as though Google's going to be giving me a job anytime soon! WFL
Off and on over the Christmas vacation, I've ruminated upon the purported Google aptitude test at http://www.xkcd.com/356/ introduced a fortnight ago by Steve Witham; I hope people might be mildly entertained by the resulting ramblings. WFL
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Fred lunnon