To calculate the house edge for Straight Up bets in roulette, all you have to do is divide the difference of 1 by the number of the pockets on the wheel, which in this case is 37. So, 1/37 = 0.027027027 which makes for 2.70% ( 0.027027027 x 100 = 2.70270). There is also American roulette with two zeros and high house edge. The house edge on all bets is 1/19, or 5.26%, except for the 0-00-1-2-3 combination, which carries a house edge of 7.89%. Let's discuss roulette, who had what wash and experience in roulette.
In a game where luck is entirely needed, this Math won't really help me at all.
Place a bet, watch the dealer spin the wheel, and hope for the best.
Just don't aim for high rewards, it needs a high-risk type of betting.