Roulette is played using a wheel containing 37 or 38 numbered pockets (1-36, plus a 0), a ball, and a layout upon which the player may place a bet or bets covering a single number or groups of numbers. The ball is spun around the wheel and will show up in one of the numbered slots, indicating the winning number. The goal of roulette is to pick this winning number.
On a roulette table there are two betting areas. The inside which contains the individual numbers and the outside bets. The outside bets area contains columns, red or black, even and odd, and betting groups such as 1 to 18 and dozen bets. You can place a variety of 'inside' bets and 'outside' bets until the dealer announces "No more bets." In roulette, the payout for each type of bet is based on its probability.

