Once you test your luck on several different roulette variations, you will notice that all of them follow the same basic ruleset. However, there is a major difference between European and American Roulette which all fans of the game should be aware of as it affects the size of the house advantage.
The game begins when the croupier spins the wheel in one direction and tosses a small ball in the opposite direction. Roulette wheels contain numbered pockets but the total number of pockets on the European and the American roulette wheel is different.
The European roulette wheel features 37 pockets (1 to 36 and a single zero pocket), while the American variation of the game is played on a wheel with 38 divisions (1 to 36, a single zero, and a double zero pocket). The numbers on the American and European wheels are alternately colored in red and black, while the zero pockets are marked in green.
Next to the extra zero pocket, another apparent difference between European and American Roulette is the sequence of the numbers on the wheel. For the most curious of our readers, the arrangement of the numbers on the European roulette wheel is not random. Considering the zero pocket, the left side of the wheel features low black and high red numbers, while the right side of the wheel contains high black and low red numbers.
Sequence of the numbers on the European roulette wheel: 0, 32, 15, 19, 4, 21, 2, 25, 17, 34, 6, 27, 13, 36, 11, 30, 8, 23, 10, 5, 24, 16, 33, 1, 20, 14, 31, 9, 22, 18, 29, 7, 28, 12, 35, 3, 26.
Sequence of the numbers on the American roulette wheel: 0, 28, 9, 26, 30, 11, 7, 20, 32, 17, 5, 22, 34, 15, 3, 24, 36, 13, 1, 00, 27, 10, 25, 29, 12, 8, 19, 31, 18, 6, 21, 33, 16, 4, 23, 35, 14, 2.
At first glance, the presence of an extra zero pocket on the American roulette wheel makes no huge difference. But if you are trying to decide which roulette variation is the most profitable, stick with us and look at the maths behind the two variations of the game.
View more...To calculate the house edge, we would like to first explain what probability and true odds are. The term probability stands for the possibility of a given outcome to occur against all possible outcomes of the game. For example, if you play European Roulette and you place a bet on a specific number, then you have only 1 way to win and 37 possible outcomes. This means that the probability of winning the bet is 1/37. To convert the fraction into percent, perform the division and multiply the result by 100. Then the equation is (1/37) x 100 = 2.70%.
Probability of success and odds of winning are two different notions. The odds take into account all possible ways to win as opposed to all possible ways to lose. If we take European Roulette, the odds of winning a bet on a single number is 1/36 as there is only 1 way to win and 36 ways to lose.
While on the subject, we would like to mention that these are the true odds but the casino never pays according to them. That is where the house advantage comes from. For example, if you win a bet on a single number, you will collect a payout of 35:1. Using this knowledge, you can calculate the odds and probabilities of winning the different kinds of roulette bets.
To calculate the house edge, roulette fans have to subtract the true odds from the casino odds and then, multiply the result by the probability of success. In other words, for bets on a single number in European Roulette the house edge is (36/1 – 35/1) x 1/37 = 1 x 0.0270. To convert the number into percent, we have to multiply it by 100, or 0.0270 x 100 = 2.70%.
But if you play American Roulette and you place a bet on a single number, then the probability and odds of success will significantly change due to the presence of the extra double zero pocket. Now, the probability of winning is 1/38, the odds of success are 1/37, while the casino odds are again 35:1. Then, the house edge for that bet in American Roulette is (37/1 – 35/1) x 1/38 = 2 x 0.026 = 0.0526, or 0.0526 x 100 = 5.26%.
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