dimanche 22 décembre 2013

I need a card (54 card deck) probability

Not sure if this is the best place to post but anyway...



What is the probability of drawing 12 cards from a standard deck (52 + 2 jokers) and getting a hand that includes all 4 Aces?



We have a guy in our RPG gaming group who we believe might be cheating, who draws many hands that suspiciously include a huge amount of Aces and face cards, like all the time. Oh yeah, and when we use dice he ALWAYS rolls above the random probability for his dice pools (and a lot of the time even rolls the maximum). He worked for many years in a casino and we believe he may have picked up a few "habits".



It's a dicy situation because no one wants to accuse without proof, but it would be good to be able to say, "Look, mate, the odds of you drawing the 4 Aces (or all the face cards, or whatever) is "X", and the fact that you've done it seven times in the last gaming session beggars belief."





via JREF Forum http://forums.randi.org/showthread.php?t=270706&goto=newpost

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