Date: May 10, 2014 10:07 AM
Author: G. A. Edgar
Subject: Re: unique ordering
In article <0acdace5-c53a-4ca4-a474-200d90f2ef4f@googlegroups.com>,

<radams2000@gmail.com> wrote:

> Thought experiment:

>

> Lets say that I randomly draw N letters out of a Scrabble letter-bag. I will

> then place those letters in a horizontal line on a table. How many UNIQUE

> patterns of letters can I produce? If there were no duplicates it would be

> easy (N factorial) but when there are duplicate letters it seems more

> complicated.

>

> Bob

Are you thinking of actual Scrabble? Some letters have duplicates, and

other don't? And the number of duplicates varies on how

frequently-used the letter is?

Or is this a mathematical Scrabble: Every letter has an unlimited

supply, and the probability of drawing an E doesn't depend on whether

some E's have already been drawn.

--

G. A. Edgar http://www.math.ohio-state.edu/~edgar/