Talk to any casino table manager and they will tell you that the secret to winning at games of chance is understanding mathematics.
If you understand the statistics (if you understand what the bank margin is and which bets are better than others), you can hit the heights. There is no casino game that is not based on probability. The bank wants to make sure that it has a better chance of winning than the players. Your local store will go out of business if it sells apples for less than it buys them. This also applies to roulette. – no profit margin, no bank! Without probability, the game would never have been invented.