Casinos control roulette by setting the house edge on the game. The house edge is the percentage of money that the casino will take from each bet placed. Roulette wheels have 36 numbered slots that players can place bets on.
Each number has a different chance of being drawn. In order for a player to win on roulette, they must guess the number that was just drawn and put in a bet before the roulette wheel has had a chance to land on that number again. .
There are several factors that affect how often a number will be drawn and how much money it will cost to guess it correctly. The size of the bet, the color of the ball, where it is placed on the wheel, and even how many other players are playing can all affect how often a particular number will be chosen.
Casinos take advantage of this by setting different odds for each of these factors in order to give players an idea of what they are likely to win if they place a bet on that particular number.
There have been some studies done over the years that suggest casinos do indeed control roulette by manipulating the odds in order to make it more likely that certain numbers will be chosen more often than others. However, there is no hard evidence to support this claim and it remains up for debate.
Some people believe that casinos use this strategy in order to make it more difficult for players to make correct predictions, while others argue that it is simply an attempt to ensure fairness for all players.
In short, casinos control roulette by setting the house edge which affects how often different numbers will be chosen and how much money they will cost to guess them correctly. However, there is no definitive proof either way as to whether or not casinos use this strategy with the intention of manipulating player outcomes.
