From: Mark Wilson <mwilson13@...>
Date: 2003-09-16T09:49:59+09:00
Subject: [OT] 0! [WAS: Re: performance and style advice requested]

0! represents the number of possible permutations of 0 elements, which 
is 1.

See:

http://mathworld.wolfram.com/Factorial.html

Regards,

Mark