Roulette is a fair game. That means that the payouts are more or less equivalent to the probabilities of winning.
They are not exactly the same as the casino needs to make some money out of it too, so the game is devised so that the casino received a percentage of the money that is wagered.

There are different types of roulette and special roulette rules used by different casinos and these all affect the actual proportion of the wagers the house retains, but generally the house edge varies from around 2.5% to a maximum of 5.26%.
As roulette is a fair game, gambling successfully is very easy. For instance, you know that betting an a red or a black will pay out even money and on average you will win just under 50% of the time, and that a winning bet on a specific number will pay out 35 times your stake and will on average pay out once in every 37 spins of the wheel (once in every 38 spins on an American wheel).

The one thing that should be avoided in roulette is some of the mythology that people use in a vain attempt to beat the laws of probability. In a fair game like roulette, some people will win and some will lose and we all hope that we will be one of the winners. It is easy to calculate such things as variance from which we can work out our actual chances of winning money on the game. The laws of probability cannot be beaten and a successful gambler will always be aware of that fact. One myth that is often used in roulette is what is known as the gambler’s fallacy.

This is where people believe that en event that has not happened for some time is somehow due to happen in the near future. In roulette is might apply to a colour not being spun for some time. For instance if the last nine spins have been red, then the gambler’s fallacy will have you believe that on the tenth spin it is more likely to be black than red. Of course it is not; it is exactly and always will be exactly 50% what ever happened previously.

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