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From: ark@alice.UucP (Andrew Koenig)
Newsgroups: net.games.board,net.math
Subject: Re: Dice "Odds"
Message-ID: <4699@alice.UUCP>
Date: Fri, 13-Dec-85 11:34:01 EST
Article-I.D.: alice.4699
Posted: Fri Dec 13 11:34:01 1985
Date-Received: Sat, 14-Dec-85 08:04:39 EST
References: <309@tekigm2.UUCP>
Organization: Bell Labs, Murray Hill
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Xref: watmath net.games.board:159 net.math:2619

Let's disregard the red die and color the other two green and blue.
You will see that the green die can give any number from 1 to 6
with equal probability and so can the blue die.  Thie means that
there are 36 equiprobable outcomes.  What are the chances of rolling,
say, 9?  You can have:

	green	blue
	6	3
	5	4
	4	5
	3	6

In other words, there are four equiprobable ways of getting 9,
so the chance of rolling a 9 is 4/36 or 1/9.  And so on.