My Math Forum Gambling Probablity Questions..

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 December 23rd, 2011, 08:28 PM #1 Newbie   Joined: Dec 2011 Posts: 1 Thanks: 0 Gambling Probablity Questions.. Hello, I somtimes playthesegames with my friends and can't figure out how to figure outthe winning %of eachgame.. The firstgame is called 13.The better wins double his bet if he wins. Itis essentiallythe same as blackjack except insteadof cards, you use dice. Each dice obviously produces a random number between 1-6. So anything under 10the better will hit and on 11, 12 and 13the better will stay. Also, sometimes we do "win 2.5x" your bet. ($2 win 5) and I'd like to know if this is profitable forthe dealer.. Adiffernet variatioin of the game is "x3". Wherethe better recieves tripple his bet if he wins. However ifthe dealer ties him,the dealer wins. Also,thereis "x4". Wherethe better wins x4is bet. (If he bets$10 he will profit $30). In thisgame, a tie + 1is a win forthe dealer. So ifthe better gets 11 andthe dealer gets 10,the dealer wins. Also,there completely differentgame called "beat 22", wherethe better must roll 5 dice and get 23 or higher. Inthe game,the better usually gets x5 his bet. If it's possible I'd like to getthe winning % / win/loss ratio / profit pergame (wherethe betis$10) for eachof thesegame modes. Thanks for any help. Also, if you don't mind sharing how you came up withthe answer that would be great. If you need me to explainthe games further please ask.
 December 24th, 2011, 12:39 AM #2 Global Moderator     Joined: Oct 2008 From: London, Ontario, Canada - The Forest City Posts: 7,842 Thanks: 1068 Math Focus: Elementary mathematics and beyond Re: Gambling Probablity Questions.. Please state how many dice are used for each game.
December 24th, 2011, 07:51 AM   #3
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Re: Gambling Probablity Questions..

Quote:
 Originally Posted by greg1313 Please state how many dice are used for each game.
It sounds like the game of "13" involves a maximum of 13 (11?) dice.

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