Understanding Roulette odds are not very complicated. They are usually represented as x:1. This means, for every bet you place on the game, you win x. Let us consider a situation where you are betting with $1 on one number in online Roulette. The odds are placed at 35:1. So if the balls lands on the pocket you had bet on, you get back $1 for the bet and $35 for the winnings from the round.