Roulette is a casino game that involves betting on the outcome of a spinning wheel. It is one of the oldest and most popular games in casinos worldwide. It owes its origin to Blaise Pascal, a French mathematician.

Roullete: A roulette wheel consists of a solid wooden disk slightly convex in shape, with metal partitions known as separators or frets, painted alternately red and black. The rim of the disk contains 36 compartments or pockets. These are numbered nonconsecutively from 1 to 36, and on European-style wheels a 37th compartment, painted green, carries the sign 0; on American wheels two green compartments on opposite sides of the wheel carry the signs 0 and 00.

The wheel encircles a central spindle which rotates smoothly and quietly in almost frictionless motion. The spindle enables the ball to travel around the outer edge of the wheel without touching the rim, and it also allows the croupier to place bets.

Various types of bets are possible, and each type has its own payout odds, which are based on probability. Some of the most common bets include:

High or Low Bet: (also called passe et manque in French)

This is a bet that consists of wagering that the ball will land on any of the first 18 numbers on the layout (1-18). If it does, you win an even money payout.

Odd or Even: This is a bet that consists in wagering that the number on the roulette table will be either an odd number or an even number. It is a bet that offers even money, and is another of the game’s most obvious winning bets.

The Dozens Bet: This is a bet that combines the best features of the high and low bets, with an added bonus. You place your chips on the first 12 numbers on the layout, or you can place them on the second dozen or third dozen, but not all three.

The Roulette wheel encircles a central spindle that rotates smoothly and quietly in almost frictionless movement. The spindle enables the ball that is thrown to travel around the outer edge of the wheel, and it also allows the croupier, or dealer, to place bets.