Here's another way to look at it:  Let's say you bet $10 on every number, one bet on each of the 38 spots.  So you've just thrown down $380 in bets.  Only one of those numbers will win, and will pay 35 to 1, so you'll get back $360 (the $350 you won plus your original $10 bet on that number).  You bet a total of $380 but you walked away with only $360, so you lost $20.  That $20 you lost represents the house edge of 5.26% ($20 lost divided by the $380 that you bet; $20 ÷ $380 = 5.26%).
Alternatively, you could wait for rare “triggers” that mean you skip many spins before betting. Then you apply an aggressive betting progression and may get lucky with a big win. The result of this is a lot of spins will occur, but you rarely bet. So you can last many thousands of spins without blowing your bankroll. This doesn’t make the system good. It just makes a losing strategy more boring to use. A strategy like this on a bankroll trend chart will show a lot of dramatic up and down bankroll spikes.
Roulette and craps are probably the two casino games with the longest pedigree. We know that dice were first used as a serious incantation to find out what the gods had in store for people. This was probably five thousand (or more) years ago. Should our army attack the village across the valley? Roll them bones – yes, either sheep bones or human bones composed the dice – and we’d find out what we should do.
As an off-topic point, I was also put-off by a post I read on their website blog about what a theatre goer should and should not wear to the theatre. While the main point of the article was not to wear denim cutoffs to the show, they also bizarrely and randomly listed a number of other things patrons "shouldn't" wear, including vintage jeans, old logo t-shirts (something that, if the writer was actually as trendy as she smugly purported to be, she might know are back in style and can be dressed up quite nicely under a cool jacket or layered necklace) and leggings. For a brand that capitalizes wildly on "making Broadway accessible to everyone," it came off grossly classist and policing of what I can only assume is its target demographic --- young people on a budget.
Bet on the inside in moderation to increase your payout. Though they have the highest payout, straight bets on a single number are risky. The odds of the ball landing on the exact number you chose is 1 in 37 (2.7%) for European wheels and 1 in 38 (2.63%) for American wheels. In addition to making a straight bet on a single number, you can also divide the odds between multiple numbers.[3]
You will either have a positive or negative edge, and waiting for something to happen like a sequence of numbers will not improve your chances of winning. The exception is if the “trigger” is directly related to a sequence of spins caused by physical variables of the wheel and ball. For example, if the trigger was “bet on whatever number that won most in 10,000 spins”, then this is bias analysis. But the “triggers” that have no effect are like “wait for 5 reds in a row then bet black”.
Another example is expecting you’ll never see 37 different numbers appear in 37 spins. Firstly, it will happen just as often as any other sequence of 37 spins. So why would you favor one group of 37 numbers over another 37 numbers? There is no difference at all. Each spin is independent and with the same odds. It’s exactly the same as expecting to never see four reds in a row (RRRR). It may occur less often than a mixed sequence like BRRB or RBRB, but the odds of any specific sequence happening are exactly the same. So thinking one sequence is more rare than another is delusion.
If the ball has landed several times in a given section (say a third) of the wheel, here is how to bet as if the dealer is purposely landing the ball there – or even if he has no purpose at all. A word of caution here – don’t be the kind of player who irritates everyone because he moans, groans and gets angry when he loses. Make sure you show class, win or lose.
James Bond Roulette System – Used by Bond himself, not in any of the films, but in the written novels. This is a system that covers 2 thirds of the table, plus the 0. It could be described as another strategy to cover the table but due to it’s notoriety, we’ve given it it’s own page, complete with a diagram, examples and whey you shouldn’t use a progression.

On an American wheel, there are 38 spots: numbers 1-36, plus 0 and 00.  Your odds of winning a one-number bet are 37 to 1 (37 ways to lose, 1 way to win).  But if you win, the casino doesn't pay you 37 to 1, they pay you less: 35 to 1.  The difference between the true odds and what they actually pay you is 2/38, or 5.26%.  You can do this same calculation for the other bets, and it comes out the same.
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