'Obviously in roulette betting on in the long run you are going to lose your money but at some point chances are you'll be in profit. This question was posted in mathematical newsgroups (, , ): 'Winning and Quitting on Red/Black in Roulette'. To Be Ahead and Leave the Casino as a Winner By Ion Saliu, Founder of Roulette Mathematics Probability, Odds to Win at Roulette in N Number of Spins ~ Roulette: Odds, Number of Spins to Quit as Winner, Payouts