Roulette is a pure game of chance in which you bet on where a ball will land on a spinning wheel. The bets are easy to learn and the payouts are fixed.
The wheel
A European wheel has numbers 1–36 plus a single zero (37 pockets). An American wheel adds a double zero (38 pockets), which nearly doubles the house edge — so the single-zero version is the better choice.
Inside bets and payouts
Inside bets cover specific numbers: a single number pays 35:1, two numbers 17:1, three 11:1, four 8:1, and six 5:1. They are higher risk with bigger payouts.
Outside bets
Outside bets cover large groups: red/black, odd/even, and 1–18/19–36 all pay 1:1, while dozens and columns pay 2:1. The zero causes most even-money bets to lose, though French rules like La Partage soften that.
A grounded approach
The house edge is about 2.7% on a single-zero wheel and 5.26% on a double-zero one. Past results never affect the next spin, and no betting system overcomes the edge — so play for fun within a set budget.
Profit, returned stake and total exposure
On a conventional single-zero table, a winning straight-up bet of 1 pays 35 in net profit plus the original 1, for a total of 36. The chance for that one number is 1/37, not 1/36. The difference explains the house edge rather than indicating a missing payout.
If you place five separate bets of 1, you have risked 5 that spin. One winning bet does not make the other four disappear: calculate the combined return minus all five stakes. Covering many numbers changes the pattern of wins and losses, not automatically the mathematical edge.
Zero, special rules and exceptions
Zero is not red or black, odd or even, or part of 1–18 or 19–36. Ordinary even-money bets therefore lose on zero unless a stated rule changes the settlement. La Partage can return half an eligible even-money stake on zero; En Prison can hold it under specific rules. Neither should be assumed from the word “French” alone.
The usual 5.26% double-zero edge does not describe every possible wager: the American five-number basket covering 0, 00, 1, 2 and 3 pays 6:1 under conventional rules and has about 7.89% edge. Multiplier, triple-zero and special-payout versions need their own calculations. Check the wheel and paytable together.
A short sequence is not a signal
A run of red does not make black due on an independent fair spin. Doubling after losses increases the possible next stake and can hit balance or table limits. Set a money and time ceiling before playing, include every chip in the total and never borrow or deposit again to continue a progression.
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