Red or Black Bet for Roulette
For roulette, red or black dey cover eighteen numbers of one colour: na di even-money bet wey every oda one dey compare with.
Eighteen numbers, e dey pay 1:1. Probability na 48.65%, no be 50%: zero na di difference.
Where to put am
Di redbetRedEven-money bet on di 18 red numbers. For French: rouge.Read di whole tin → diamond and blackbetBlackEven-money bet for di 18 black numbers. For French: noir.Read di whole tin → diamond boxes among di outside betsbetOutside betBet on di boxes wey surround di grid: dozens, columns and even-money bets.Read di whole tin →, or di words rouge and noir for French layoutequipmentLayoutDi betting grid wey dem print for di table. Dem also dey call am: table, felt, cloth.Read di whole tin →. Each one must reach di table minimum. Red numbers: 1 3 5 7 9 12 14 16 18 19 21 23 25 27 30 32 34 36. Black: di oda eighteen. ZerowheelZeroDi one green pocket wey no even-money, dozen or column bet dey cover; na im be di source of di house edge. Dem also dey call am: single zero, 0.Read di whole tin → na green and e no belong to any of dem.
Payout and di odds to win for roulette on red or black
Fair odds against 18 out of 37 na 1.056 to 1; di table dey pay 1. $10 roulette bet on red wey hit go bring $10. For 37 average spins: 18 wins (+$180), 18 losses (−$180), one zero (−$10). Net −$10 for $370.
Streaks
Red and black dey follow each oda for di wheel, but no be for time. Ten reds one afta di oda get probabilitymathsProbabilityDi chance of one outcome, from 0 to 1 or from 0% to 100%. One number: 1/37 = 2.70%.Read di whole tin → (18/37)¹⁰ = 0.074%, about one time for every 1,350 windows of ten spins; for casino wey get twenty tables wey dey run 50 spins every hour, e dey happen somewhere most days. No one of am dey tok anytin about spin eleven, wey be 18/37 red like every spin before am.
Why systems dey live here
Red/black na di closest tin for di table to coin toss, and dat one make am di natural base for progressionsstrategyProgressionAny rule wey dey change di stake based on di results wey don pass. Negative progressions dey raise am afta losses, positive ones afta wins.Read di whole tin →: MartingalestrategyMartingaleProgression wey dey double di bet afta every loss. Check di Strategy section to see wetin e dey do and wetin e no dey do.Read di whole tin →, D’Alembert, FibonaccistrategyFibonacciProgression wey dey follow di sequence 1, 1, 2, 3, 5, 8, 13…: one step forward afta you lose, two steps back afta you win.Read di whole tin →, LabouchèrestrategyLabouchèreCancellation system: write one line of numbers, bet di total of di two ends, cancel dem afta you win, add di stake wey you lose afta you lose.Read di whole tin → and ParolistrategyParoliPositive progression: double afta you win, start again afta you lose or afta three wins one afta di oda. Dem also dey call am: reverse Martingale.Read di whole tin → all dey assume even-money betbetEven-money betRed/black, odd/even, high/low. 18 numbers, e dey pay 1:1.Read di whole tin →. Every one of dem get expected lossmathsExpected lossExpected value times di total moni wey you bet; di average amount wey you go lose for one session or one period.Read di whole tin → of 2.70% of di total turnovermoniTurnoverDi total moni wey you bet for one session or one period, including winnings wey you bet again. Dem also dey call am: handle, action.Read di whole tin → for dis bet, and 1.35% for la partageruleLa partageFrench rule: when zero come out, dem go return half of even-money stake. E dey cut di house edge for dose bets into half, to 1.35%.Read di whole tin → table. Di strategy pages dey show wetin each one dey do to di shape of one session.
- p10 −$420
- p25 −$280
- median −$140
- p75 +$20
- p90 +$140
Fibonacci Strategy for RouletteLabouchère Strategy for Roulette
French rules
With la partage or en prisonruleEn prisonFrench rule: when zero come out, dem go hold even-money bet for di next spin instead make e lose. E dey cut di house edge for dose bets into half.Read di whole tin →, di edge for dis bet go cut into half, to 1.35%. Na di most valuable fact for dis page be dat: if you wan bet red, find French table.
Di run of 1913
For 18 August 1913 for Monte Carlo, black land 26 times one afta di oda. Players gather round di table from about di fifteenth black, dem dey bet red becos dem think sey e don “due”, and dem lose millions of francs. Di probability of 26 blacks na (18/37)²⁶, about one in 137 million; di probability sey somebody, somewhere, go see am one day na one.
Questions wey pipo dey ask
No. 18 for each.
Red, by small margin, for most of di studies wey dem publish about how pipo dey behave for di table. E no change anytin.
Yes, perfectly. For di layout dem dey look scattered becos di layout dey for counting order.
Small laugh
Di wheel no get memory. Players get too much.
Sources
- Ethier, S. N. The Doctrine of Chances: Probabilistic Aspects of Gambling.
- Feller, W. An Introduction to Probability Theory and Its Applications, Vol. 1.
- Schwartz, D. G. Roll the Bones: The History of Gambling.