Mathematically in the book "Chance" the only way to conclusively win, is to start with a low figure (if you can afford a higher amount so be it), and each gamble
pinupcasinobet.com, double your betting amount.
The moment you win, leave immediately.
The problem is, that it very quickly becomes more money than many people own, and it is possible to not actually win say a game of roulette before you are up for millions of dollars.