The wheel
European Roulette uses pockets 0โ36. There is no double zero. That single green zero is the main source of the house edge on standard bets.
| Bet family | Coverage idea |
|---|---|
| Straight | One exact number |
| Split / street / corner | Small inside groups |
| Dozen / column | Twelve numbers |
| Red/black, odd/even, high/low | Nearly half the wheel |