If you bet $100, your odds of winning are around 50% and if you lose, bet $200, and so on and so forth until you win, and then cash out with a guaranteed profit. Assuming odds of black are 47.37% as per American roulette, your odds of not winning a single one after 6 tries are 0.02125 (I think) and decrease exponentially after each subsequent try.
In: 93
Casino Pit Boss Here,
This style of betting is called a martingale system and this is why we have limits on tables. You are correct in that if you keep doubling your bet you will eventually win but you will hit the table limit quicker than you think. We have $100 min bet tables with $50k max available to the general public. You would hit the table max after your 9th bet.
100-200-400-800-1600-3200-6400-12800-25600-50000
You end up risking more and more with each hand but you will only ever make what you started with as profit when you win (in this case $100).
You need a hefty bankroll to play like this and if you are unlucky enough to hit the max without winning, you would then need to play like this more than 500 times (and be successful) to recoup your losses.
I have seen many people try this but you will always lose in the long run. Even if you manage to get yourself a higher limit, say $500k, that only gets you like 3 or 4 more hands if doubling up.
Not a good idea.
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