Roulette Dozens Strategy and Columns
Roulette dozens strategy ek saath do dozens ya do columns par bet karti hai, 37 mein se 24 numbers cover karke.

64.9% spins jeetiye, net +1 unit; baaki 35.1% mein 2 units haariye. Expected valueganitExpected valueLambe samay mein har bet ka ausat nateeja. Har standard European bet ke liye stake ka −1/37.Poora padhein →: lagaye gaye do units ka −2.70%.
Two-dozen roulette strategy ka arithmetic
Do dozensbetDozen1–12, 13–24 ya 25–36, payout 2:1.Poora padhein → mein se har ek par ek unitpaisaUnitBase stake jismein koi system ya player kaam karta hai. Progressions units mein batayi jaati hain taaki kisi bhi table par laagu hon.Poora padhein →. Kisi mein bhi hit ho toh woh 2 deta hai aur doosra haarta hai: +1. Miss (teesra dozen ya zerowheelZeroAkela green pocket jise koi even-money, dozen ya column bet cover nahi karta; house edge ka source. Doosre naam: single zero, 0.Poora padhein →) dono haarta hai: −2. (24 × 1 − 13 × 2)/37 = (24 − 26)/37 = har do lagaye units par −2/37 = har unit par −1/37. Edge baaki sab jaisa, shape alag: teen mein lagbhag do jeet, har ek haarne wale spin ke aadhe ke barabar.
Yeh jeetne jaisa kyun lagta hai
65% spins jeetna aam bets mein sabse oonchi hit rate hai, 25-number James Bond spread ko chhodkar. Two-dozen betting ka session ek lamba narm aari ke daant jaisa hota hai: ek upar, ek upar, do neeche, ek upar. Mean slope turnoverpaisaTurnoverSession ya muddat mein lagayi gayi kul raqam, dobara lagayi gayi jeet milakar. Doosre naam: handle, action.Poora padhein → ka −2.70% hai, aur kyunki aap har spin do units lagate hain, single dozen ke muqable turnover double hai.
- p10 −$500
- p25 −$500
- median −$360
- p75 +$0
- p90 +$280
Dozens par progressions
Haar ke baad stake double karna 2 to 1 bet par waisa recover nahi karta jaisa even money par. Maan lijiye aap 2 units haare (har dozen par ek), 2 aur 2 par double kiya, aur jeete: aapko 4 milte hain aur doosre dozen par 2 jaate hain, net +2, jo sirf pichhla loss cover karta hai, upar kuch nahi. Har haar ke baad net +1 ke liye aapko double se zyada karna hoga, aur standard dozens progressionstrategyProgressionKoi bhi rule jo pichhle results ke hisaab se stake badalta hai. Negative progressions haar ke baad ise badhati hain, positive jeet ke baad.Poora padhein → triple karna hai: 1, 3, 9, 27, 81. $5 base se $500 limit paanch haar ke baad aa jaati hai; har koshish par (13/37)⁵ ≈ 0.5%, aur ek session mein bahut saari koshishein.
Rotation aur “sote hue” dozens
Bahut saare bikne wale systems yeh ghumate hain ki kaunsa dozen chhodna hai, aksar woh jo abhi hit hua ya woh jo kaafi der se hit nahi hua. Spins independent hain, isliye kaunse 13 numbers uncovered chhodne hain is choice ka kisi cheez par koi asar nahi. Yeh systems ek doosre ke barabar hain aur random tareeke se uncovered dozen chunne ke barabar bhi.

Roulette column strategy
Upar ki har baat do columnsbetColumnLayout ke ek vertical column ke barah numbers, payout 2:1.Poora padhein → par lagti hai, jo bhi 24 numbers cover karte hain, ya ek dozen plus ek column par, jo 20 cover karte hain (chaar numbers do baar gine jaate hain). Bet Builder tool kisi bhi mix ka exact distribution deta hai.
Ek dheemi doubling
Las Vegas mein bikne wala ek pamphlet, Famous Las Vegas Gambling Systems, column ke liye ek narm progression deta hai: 1 unit bet kijiye, haar ke baad phir 1, aur sirf lagataar do haar ke baad double kijiye, toh stakes chalte hain 1, 1, 2, 2, 4, 4, 8, 8 (Bollman, 2024). Stakes MartingalestrategyMartingaleProgression jo har haar ke baad bet double karti hai. Yeh kya karti hai aur kya nahi, iske liye Strategy section dekhiye.Poora padhein → ke aadhe speed se badhte hain, aur keemat yeh hai ki ab jeet hamesha losses cover nahi karti: jodi ki doosri bet par jeet aapko barabar ya peeche chhod sakti hai. Lagataar das miss 62 units le jaate hain aur lagbhag 50 koshishon mein ek baar aate hain, kyunki column 37 mein 25 baar miss karta hai. Har lagaye unit ki keemat ab bhi 2.70% hai.
Sawaal
Oonchi hit rate, bade losses, same expected value. Same total stake par RedbetRed18 red numbers par even-money bet. French mein: rouge.Poora padhein → ka varianceganitVarianceYeh naap ki results expected value ke aas-paas kitna faile hue hain. Straight-up ke liye zyada, even-money bets ke liye kam.Poora padhein → kam hai.
Zero par ek chippaisaChipEk fixed raqam ka token, jise bet lagane ke liye layout par rakha jaata hai. Doosra naam: check.Poora padhein → jodiye aur aap 25 numbers cover karte hain; tab zero −2 ki jagah 35 − 2 = +33 deta hai. Expected value har teen units par −3/37 ho jaati hai: har unit par wahi.
Maths ke saath mazaa
Pehle khud try kijiye. Har solution chhupa hua hai; jab taiyaar hon tab kholiye.
Pamphlet ka columnbetColumnLayout ke ek vertical column ke barah numbers, payout 2:1.Poora padhein → system 1, 1, 2, 2, 4, 4, 8, 8 unitspaisaUnitBase stake jismein koi system ya player kaam karta hai. Progressions units mein batayi jaati hain taaki kisi bhi table par laagu hon.Poora padhein → lagata hai, sirf lagatar do haar ke baad double karta hai, aur pehli jeet par ruk jaata hai. Column 2 to 1 deta hai. Agar pehli jeet bet 1, 2, 3 … 8 par aaye to aap kitne aage ya peeche hain?
Solution dikhaiye
Jawab Bet 1, 3, 5 ya 7 par jeet aapko 2 units upar chhodti hai. Bet 2, 4, 6 ya 8 par jeet aapko +1, 0, −2 aur −6 units par chhodti hai: aam +2 se kam, aur bet 6 se peeche.
Stake s par jeet 2s deti hai; usse pehle haara gaya sab ghataiye.
Bet 1 (stake 1): +2. Bet 2 (stake 1, pehle 1 haara): 2 − 1 = +1. Bet 3 (stake 2, 2 haare): 4 − 2 = +2. Bet 4 (stake 2, 4 haare): 4 − 4 = 0. Bet 5 (stake 4, 6 haare): 8 − 6 = +2. Bet 6 (stake 4, 10 haare): 8 − 10 = −2. Bet 7 (stake 8, 14 haare): 16 − 14 = +2. Bet 8 (stake 8, 22 haare): 16 − 22 = −6.
Har pair ka pehla stake hamesha net +2 deta hai; doosra net +1, 0, −2, −6, −14 aur aise hi, har baar bura. Yahi dheemi chadhai ki keemat hai. Column 37 mein 25 baar miss karta hai, isliye lagatar das miss, 62 units ka nuksaan, lagbhag 50 koshishon mein ek baar aate hain.
Thodi hansi

Do dozens: 65% hit rate, 2.70% keemat.
Sources
- RouletteDoc. Roulette strategies ka overview.
- Roulette77. Roulette strategies ka overview.
- Ethier, S. N. The Doctrine of Chances: Probabilistic Aspects of Gambling.
- Bollman, M. Basic Gambling Mathematics: The Numbers Behind the Neon, 2nd ed.