What is Roullete?

Roullete is a casino game where a small ball is released into a revolving wheel, and bets are made on which red or black numbered compartment the ball will drop into as it comes to rest. The wheel has 37 compartments, painted alternately in red and black (with two green compartments on American roulette wheels) and is set on a revolving table marked to correspond to the numbers on the wheel. Each bet pays at different odds depending on the bet type. Players may also place bets on groups of numbers, color, high or low, and whether the number is odd or even.

The game originated in the 17th century, and many fanciful stories surround its origin, including a claim that it was invented by the French mathematician Blaise Pascal. Regardless of its actual origin, it rapidly gained popularity in the casinos and gambling houses of Europe and eventually spread to America. Due to widespread cheating, the game was modified to prevent devices from being hidden in the wheel and table, and the layout and betting procedure simplified.

To play the game, the croupier (dealer) places chips on the betting area of the table and spins the wheel. Once the wheel stops spinning, the dealer clears off losing bets and pays winners before betting for the next round begins. The dealers will typically announce that betting for the current round is closed, and they will then pause the wheel until players are ready to make their decisions.

The roulette wheel is a solid metal disc, slightly convex in shape, with thirty-six colored compartments, painted alternately red and black (with a green one on American wheels). The wheel also has a number of symmetrical symmetries. For example, on the European wheel the high red numbers and the low black ones are on opposite sides of the zero, and all the numbers between 19 and 24 form a group called a dozen, which can be placed for a bet of 2-1.