Both the "American" and "European" versions of roulette have 18 black pockets and 18 red pockets. Instead of having 2 green pockets, however, the European roulette wheel has 1 green pocket. If a gambler bets on red, what is the probability that he or she wins on an American roulette wheel? Are those odds better or worse than on a European roulette wheel? 9/19 ; better chance of winning on a American wheel 9/19 ; better chance of winning on a European wheel 18/37 ; better chance of winning on a American wheel 18/37 ; better chance of winning on a European wheel