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Old 09-15-2007, 09:30 PM
CruS CruS is offline
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Join Date: Sep 2005
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Posts: 543
Default Re: funny question about quads two hands in a row

What gedanken says is correct, there are 5 places for the first card, and 4 for the next.
5*4 = 20
20, three irrelevant cards (take 3 out of the remaining 52-2-2) = 48*47*46.
Positive results = 20*48*47*46
Possible results = 50*49*48*47*46
Positive results / Possible results = odds
20/(50*49) = 1/122,5
The chance of getting a specific hand (regardless of suits)
is 1/13*1/17 = 1/221
So, if you just caught quads with 4rs, the chance of picking up two 4rs again AND getting quads when the whole board is out is 1/122,5*1/221 = 1/27072.5
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