Re: NLH Chances of 2 people hitting trips on flop
Use combinations.
There's exactly two 5's left in the deck. There are 46 other cards that could make up the third card. So that's 46 possible flops with trips.
The total number of flops that can be dealt with the 48 undealt cards is 48c3 = 17296.
46 / 17296 = 0.00265957447
So this will happen about 0.00266% of the time, which is 1 out of 376 times.
To learn more about how to do these sorts of calculations, Google for keywords like "combinatorics" and "probability".
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