Roulette is one of those casino games that looks simple until the numbers enter the picture. A player chooses a number, a colour, or a group of numbers, the wheel spins, and the ball eventually settles into a pocket. Yet a small difference in the wheel’s design can have a lasting effect on the mathematics of the game. The clearest example is the difference between European and American roulette. Both versions follow the same basic idea, but their pockets create different probabilities and different house edges. One Extra Pocket Changes the Odds A European roulette wheel contains 37 pockets, numbered…