Straight Up bet is a wager on a single number. It pays 35 to 1. Split Bet is a wager on two numbers and it pays 17 to 1. You make this bet by placing your chip so it straddles the line between any two numbers. Street bets or line bet pays 11 to 1. You make this bet by placing your chip on the vertical line separating the outside and inside. Until the late 1800s, roulette wheels in the United States featured 31 numbers, plus 0, 00, and an American Eagle symbol that acted as a third 0. Numbers on the wheel are arranged so that red alternates with black, odd alternates with even, and consecutive numbers of the same color add up to 37 - most of the time. The number 12, 14, and 16 all appear diagonally to add up to 42. And when you add number 2 and 4, the result is 6 of course! The third reference – Three numbers appearing horizontally on the Roulette wheel adds to six, and the numbers 28, 29, and 30 are inscribed horizontally towards the rear. The sum of these numbers is 87, and when you add 8 and 7, the total is 15. Ever wonder how many numbers there are on a roulette wheel? Interestingly, it all depends on the specific version of roulette. Online roulette numbers total 38 on the American wheel and 37 on the European version. Why the difference? The American version of roulette adds a double zero, increasing the casino's house edge to a hefty 5.26%.