If the wheel were to come up with a number like 3 double zeroes (6), then the player would have won their bet because 3 doubles as 36. If the wheel has 36 numbers, and a player wants to bet on red, they might place a bet on number 36, which would be the double zero. This could be why some roulette wheels have a double zero, in order to give players more chances to win.Īnother possibility is that the double zero is used as a placeholder for another number. A double zero can be thought of as two zeroes, which means that it has a higher chance of being drawn than any other number. One possibility is that the double zero is used as a wildcard to give players more opportunities to win. There are several possible explanations for why some roulette wheels have a double zero.