Roullete (or Roulette) is a casino game wherein a small ball rolls around a wheel and bets are placed on the pocket in which it will land. Players can bet on a single number, various positional groupings of pockets, the color red or black, whether the numbers are odd or even, and more. The payout odds for each type of bet are based on its probability. Bets placed on the numbers are called inside bets, while bets placed on other sections of the board are called outside bets.
The Street Bet/Three Number Bet/Side Bet/The Trio: Also known as a cheval in French, this bet consists of placing your chip(s) to straddle the line between two adjacent numbers on the layout. It costs 17 chips to complete and pays out 11-1 if it wins.
Odd or Even Bet: Also known as impair et pair in French, this bet requires you to wager that the winning number will be either one of the first 12 numbers on the layout (1-18) or one of the last 18 numbers (19-36). If it is a 0 or 00, all outside bets lose. This is an even-money bet, with a payout of 1-1.
The roulette table (aka the layout) is composed of a solid wooden disk slightly convex in shape with thirty-six compartments painted alternately red and black, plus a green compartment that carries the sign 0 on European wheels. The compartments are separated by metal partitions called separators or frets, and the numbers on them are arranged in nonconsecutive columns.