Roulette Column Bet
Roulette column bet layout ki ek vertical line ke barah numbers cover karti hai.

Barah numbers, payout 2:1. ProbabilityganitProbabilityKisi outcome ka chance, 0 se 1 tak ya 0% se 100% tak. Ek number: 1/37 = 2.70%.Poora padhein → 32.43%. Dozen jaise hi odds, bas numbers alag.
Roulette table ke columns
LayoutsaamanLayoutTable par chhapa betting grid. Doosre naam: table, felt, cloth.Poora padhein → ke neeche teen “2:1” boxes, har columnbetColumnLayout ke ek vertical column ke barah numbers, payout 2:1.Poora padhein → ke neeche ek. Column 1 mein 1, 4, 7 … 34; column 2 mein 2, 5, 8 … 35; column 3 mein 3, 6, 9 … 36. Har box ko akele table minimum poora karna hota hai. 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 → kisi column mein nahi hai.
Roulette column ka payout aur expectation
Bilkul dozenbetDozen1–12, 13–24 ya 25–36, payout 2:1.Poora padhein → jaisa: fair odds 2.083 to 1, table 2 deti hai, expected lossganitExpected lossExpected value guna kul lagayi gayi raqam; ek session ya ek muddat mein ausat nuksaan.Poora padhein → stake ka 2.70%, standard deviationganitStandard deviationVariance ka square root; expected value se kisi result ki aam doori.Poora padhein → prati 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 → 1.39.
Colors ka mix
Columns mein colors balanced nahi hain. Column 1 mein chhe redbetRed18 red numbers par even-money bet. French mein: rouge.Poora padhein → aur chhe blackbetBlack18 black numbers par even-money bet. French mein: noir.Poora padhein → hain. Column 2 mein chaar red (5, 14, 23, 32) aur aath black. Column 3 mein aath red aur chaar black (6, 15, 24, 33). Yeh tabhi matter karta hai jab aap column ko color bet ke saath milayein aur jaanna chahein ki dono kitni baar jeetti hain: column 3 plus red aath numbers par dono jeetti hain, jabki column 2 plus red chaar par.
Roulette columns dozens se alag kyun lagte hain
Dozen lagataar barah numbers hai; column har baar do numbers chhodta hai. Wheel par dono bikhre hain, isliye koi bhi sectorwheelSectorWheel par pockets ka lagatar ek hissa (arc), layout ke kisi group se alag cheez.Poora padhein → nahi hai. Fark sirf dikhawe ka hai, lekin isi wajah se “column systems” aur “dozen systems” alag products ki tarah beche jaate hain, jabki bet ek hi hai.
Combinations
Do columns, do dozens ki tarah, 37 mein 24 spins jeette hain aur net ek unit. Column plus dozen chaar numbers par overlap karte hain (column 1 aur pehla dozen 1, 4, 7, 10 share karte hain), 20 numbers cover karte hain aur unme se chaar par double hit. Bet Builder tool exact distribution dikhata hai.
Sawaal
Grid ke neeche, 34, 35 aur 36 ke neeche. French double-ended layout par yeh zero se door wale sire par hote hain.
Nahi. Zero teeno columns ke upar hai aur kisi ka hissa nahi hai.
Thodi hansi

Same odds, alag numbers, alag font.
Sources
- Ethier, S. N. The Doctrine of Chances: Probabilistic Aspects of Gambling.