
While you have lots of options when it comes to betting at the roulette table, the odds of most of them are exactly the same. Overall, the house advantage for American roulette is about 5.25%, and is about 2.7% for European Roulette.
The odds for individual bets are much what you’d expect them to be, as far as the odds of picking a single number correctly being 37 to 1, the odds of picking red or black correctly being 1.111 to 1, and so on, based solely on the math and the numbers available on the table to bet on.
Remember, it's the presence of the 0 (and the 00 in American roulette) that skews the odds in favor of the house, as the ball dropping into a 0 or 00 causes many common bets on the table to lose, such as red/black or even/odd.