Quiz · Game · 6 minute

Guess di edge

A bet combination show up. Guess di house edge. Den di Bet Builder arithmetic show yuh it, line by line.

Short ansa

Six roun fram a pool a fourteen. European, American, French an mini table; single bet an spread. Inside 0.1% get 3 point, inside 0.5% get 2, inside 1% get 1.

roun
6 outta 14
top score
18
table
4
di trap
la partage mix

Roun 1 outta 6

European wheel · 37 pocket
Pon di table
$10Red
2.70%

Score

16–18: yuh do di arithmetic inna yuh head.

11–15: yuh know di four numba (2.70, 5.26, 1.35, 7.89) an wen dem mix.

6–10: yuh know di European edge; di odda table dem deh pon di Variations page dem.

Unda 6: read “Di house edge inna roulettemathsHouse edgeDi part a evry stake weh di casino keep pon average: 2.70% inna European roulette.Read di whole ting →”, den “Build yuh bet”. Di rule a one line: edge = −Σ(stake × EV) / Σ stake.

Ow di reveal work

Each bet inside di combination have im own expected valuemathsExpected valueDi average result pon evry bet inna di long run. −1/37 a di stake fi evry standard European bet.Read di whole ting → fi each dollar: (payoutmoney mattaPayoutWah a bet weh win gi yuh back, weh dem quote as “X to 1” on top a di stake weh come back.Read di whole ting → base − pocketgearPocketOne a di 37 compartment wid numba pon di rotor. Nex name: slot, cup.Read di whole ting →) / pocket, weh a −1/37 pon a European table, −2/38 pon a American one, −1/13 pon mini roulette, an −0.5/37 fi even-money betbet demEven-money betRed/black, odd/even, high/low. 18 numba, pay 1:1.Read di whole ting → unda la partagerule demLa partageFrench rule: wen zero hit, half a di even-money stake come back. It cut di house edge pon dem bet deh inna half, to 1.35%.Read di whole ting →. Di American top line a di exception: it pay 6 to 1 pon five numba, fi −3/38. Multiply each one by im stake, add dem up, divide by di total stake. Di Bet Builder tool do dis fi any spread yuh like.

Question dem

Wah mek most ansa come out 2.70%?

Cause evry standard European bet a −1/37 a im stake, an a sum a dem kinda bet a −1/37 a di total.

Which roun dem hardest?

Di French mix dem. Di even-money chip demmoney mattaChipA token weh stand fi a fix amount, weh yuh put pon di betting layout fi mek a bet. Nex name: check.Read di whole ting → deh at 1.35% an evryting else at 2.70%, suh di ansa siddung inna di middle, weighted by stake.

Sumting fi laugh

Guess, den look pon di arithmetic.

Guess, den look pon di arithmetic.

Source dem

  1. Ethier, S. N. The Doctrine of Chances: Probabilistic Aspects of Gambling. Springer, 2010. Chapter 13, roulette.
wi check it 2026-09-28model: European wheel, single zeroow wi work it out ↗source dem ↗