There are eighteen black numbers and eighteen red numbers. And, while the red/black pattern continues around the wheel, the numbers don’t follow any pattern you can read into. On each side of the 0 pocket, you’ll find interchanging black and red numbers.
The 0 ensures a house advantage, as it’s not included in even-money bets.
This includes red/black numbers from 1 to 36 and one green 0. The European roulette wheel has 37 numbers.
