American roulette has two zeros, which means there are 38 numbers on the wheel, and French roulette has three zeros and 39 numbers on the wheel. https://image.google.mn/url?sa=j&url=https://medalrange.com/%EC%B5%9C%EA%B3%A0%EC%9D%98-%EC%B9%B4%EC%A7%80%EB%85%B8%EC%82%AC%EC%9D%B4%ED%8A%B8%EB%A5%BC-%EC%B0%BE%EC%95%84%EC%84%9C/