Roullete is a gambling game in which players make bets on the red or black numbered compartments into which a small ball will come to rest when it spins around a revolving wheel. The bets are made on a table, and the outcome of each spin is determined by a series of probabilities. The odds of winning are calculated by the number and the position of the numbers on the wheel. If the bet wins, the player receives a payout equal to the amount of money wagered.
The game originated in the 17th century, with Blaise Pascal being credited with inventing it while working on perpetual motion machines. At the time, it was a very popular pastime in Paris. It was later brought to the United States, where it became an extremely popular casino game.
Once a player has placed their bets, the croupier will spin the roulette wheel and throw the ball into it. The ball will then land on a number, and if the player had bet on that number or section of the wheel they win. There are several types of bets, including a single number, groups of numbers (such as high-low or odd-even), or the first, second, or third dozen.
The most common bets are called Outside bets, which cover a specific group of numbers or colors on the betting grid. These bets typically pay out even money if they win, so they are a good choice for beginners who want to increase their chances of winning without risking much. They also have a lower house edge than Inside bets, which cover individual numbers or specific combinations of numbers. Inside bets can have very high payouts, but they are usually the most expensive bets on a roulette table.