In European Roulette, the goal is to predict which color, number, or group of numbers the roulette ball will land. The Roulette Wheel is characterized by 37 numbered slots, including a 0 slot. You can either place inside or outside bets.
An outside bet is placed on large groups of numbers or on a single color. Outside bets include bets on Red, Black, -18, 19-36, 1st 12, 2nd 12, 3rd 12, and the to columns. Outside bets have better odds of winning but lower payouts.
On the other hand, an inside bet is made by betting on a specific number or a small group of numbers. This type of bet includes straight up bets, split bets, corner bets, five-number bets, and six-number bets. Inside bets have lower odds of winning but higher payouts.