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
There’s one thing that gets in the way of this (well, maybe two).
Casinos place a maximum on the permissible bets at their games. So, at a certain point, you will reach a point where you can’t double the bets any more.
Also, the second thing is, you may run out of money at a certain point before you win back what you lost.
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