Where on the wheel a ball will land will always be completely random, for each and every round of play. Thus, betting on the outcome is not something you can build any skills for, but this does not mean that it is not possible to increase your chances of winning by using a strategy. There are a number of different strategies for roulette, and the most common are different versions of progression strategies. This means that there are strategies that take into account the outcome of the previously played rounds. The most common of these strategies is the one called the martingale theory, and theoretically this should always make you win in the long run.
This is a strategy that is widely used when playing on the large groups of numbers that cover half of all numbers on the wheel. There are bets that you achieve by betting on either all reds, all blacks, all high numbers (19-36), all low numbers (1-18), all odd numbers or all even numbers. In the event of a loss on such an effort, you double your money. The theory is that if you always bet on, for example, all reds, the ball will sooner or later always land on red. The downside is that the gradually increase at a rapid pace, and this increases the chance that you run out of money, or reach the maximum stakes on the table.
If you look at the table above, you can also see that if you lose 9 times in a row, but win on the tenth attempt, you have bet 10,230 kroner to be left with a profit of 10 kroner. Unless you have a lot of money to play with, this is quickly a bit too high a bet for most players, and this is after all only when you start with a bet that is as low as 10 kroner. You may think that it is very unlikely that an outcome will be repeated four, five, six or more times in a row. But it is actually not as unlikely as most people think. At least when we consider that this casino gaming strategy will have to work over thousands of spins if it were to yield a sure win. Let’s take a closer look at the probability that you will not hit the color you have chosen to play on.