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-   -   easy probability question (http://archives2.twoplustwo.com/showthread.php?t=401660)

Victor 12-19-2005 10:04 PM

easy probability question
 
you have 4 dice. you roll them all. what are the chances that exactly 1 die shows a 3 or a 4 (and no other 3s or 4s are showing)?

MagicFlea 12-19-2005 10:38 PM

Re: easy probability question
 
(1/3) * (2/3)^3 * 4 = 32/81

first, consider the first die coming up 3 or 4 and the rest coming up not... then multiply by four to account for other possibilities.

Victor 12-19-2005 11:20 PM

Re: easy probability question
 
thanks a lot.


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