Cacar ja ko baƙi a roulette
A roulette, ja ko baƙi tana shafar lambobi goma sha takwas na launi ɗaya: ita ce babban misali na cacar ɗaya zuwa ɗaya.

Lambobi goma sha takwas, tana biyan 1:1. Yiwuwa 48.65%, ba 50% ba: sifili ne ya kawo bambancin.
Wurin ɗorawa
Akwatunan lu'u-lu'u jacacaJaCacar ɗaya zuwa ɗaya (even-money) a kan lambobi ja 18. A Faransanci: rouge.Karanta gaba ɗaya → da lu'u-lu'u baƙicacaBaƙiCacar ɗaya zuwa ɗaya (even-money) a kan lambobi baƙi 18. A Faransanci: noir.Karanta gaba ɗaya → cikin cace-cacen wajecacaCacar wajeCaca a kan akwatunan da ke kewaye da raga: dozin, ginshiƙai da cace-cacen ɗaya zuwa ɗaya.Karanta gaba ɗaya →, ko kalmomin rouge da noir a teburin cacakayan aikiTeburin caca (layout)Ragar caca da aka buga a kan tebur. Ana kuma kiransa: table, felt, cloth.Karanta gaba ɗaya → na Faransa. Dole kowanne ya kai mafi ƙarancin cacar teburin. Lambobi ja: 1 3 5 7 9 12 14 16 18 19 21 23 25 27 30 32 34 36. Baƙi: sauran goma sha takwas. SifilidabaranSifiliRamin kore guda ɗaya da babu cacar ɗaya zuwa ɗaya, ta dozin ko ta ginshiƙi da ke rufe shi; tushen fifikon gidan caca. Ana kuma kiransa: sifili ɗaya, 0.Karanta gaba ɗaya → kore ne kuma ba na ɗayansu ba ne.
Biya da yiwuwar cin nasara a roulette a kan ja ko baƙi
Biyan da ya dace da 18 cikin 37 shi ne 1.056 zuwa 1; teburin yana biyan 1. Cacar roulette ta $10 a kan ja da ta ci tana dawo da $10. A matsakaicin juye-juye 37: nasara 18 (+$180), asara 18 (−$180), sifili ɗaya (−$10). Sakamakon tsaf −$10 a kan $370.
Jerin sakamako iri ɗaya
Ja da baƙi suna bin juna a kan dabaran, amma ba haka suke fitowa a jere ba. Ja goma a jere suna da yiwuwalissafiYiwuwaDamar faruwar wani sakamako, daga 0 zuwa 1 ko daga 0% zuwa 100%. Lamba ɗaya: 1/37 = 2.70%.Karanta gaba ɗaya → ta (18/37)¹⁰ = 0.074%, kusan sau ɗaya a cikin kowane taga 1,350 na juye-juye goma; a gidan caca mai teburai ashirin da ke yin juye-juye 50 a kowace awa, hakan yana faruwa a wani wuri kusan kowace rana. Babu ɗaya daga cikin wannan da ke faɗin wani abu game da juyi na goma sha ɗaya, wanda yiwuwar ja a cikinsa 18/37 ce kamar kowane juyi kafinsa.
Me ya sa tsare-tsare suka fi zama a nan
Ja/baƙi ita ce mafi kusanci da jefa tsabar kuɗi a teburin, abin da ya sa ta zama tushe mafi dacewa ga jerin ƙarin cacadabaraJerin ƙarin cacaDuk wata ƙa'ida da ke canza kuɗin caca bisa sakamakon da ya gabata. Jerin ƙarin caca bayan asara yana ɗaga shi bayan an rasa, na bayan nasara kuma bayan an ci.Karanta gaba ɗaya →: MartingaledabaraMartingaleJerin ƙarin caca da ke ninka caca bayan kowace asara. Ku duba sashen “Dabarun caca na roulette” don ganin abin da yake yi da wanda ba ya yi.Karanta gaba ɗaya →, D’Alembert, FibonaccidabaraFibonacciJerin ƙarin caca da ke bin jerin lambobi 1, 1, 2, 3, 5, 8, 13…: mataki ɗaya gaba bayan asara, matakai biyu baya bayan nasara.Karanta gaba ɗaya →, LabouchèredabaraLabouchèreTsarin sharewa: a rubuta layin lambobi, a yi caca da jimillar lambobi biyu na ƙarshe, a share su bayan nasara, a ƙara kuɗin cacar da aka rasa bayan asara.Karanta gaba ɗaya → da ParolidabaraParoliJerin ƙarin caca bayan nasara: a ninka bayan nasara, a koma farko bayan asara ko bayan nasarori uku a jere. Ana kuma kiransa: reverse Martingale.Karanta gaba ɗaya → duka an gina su ne a kan cacar ɗaya zuwa ɗayacacaCacar ɗaya zuwa ɗaya (even-money)Ja/baƙi, mara/cika, manya/ƙanana. Lambobi 18, biya 1:1.Karanta gaba ɗaya →. Kowanne daga cikinsu yana da asarar da ake tsammanilissafiAsarar da ake tsammaniƘimar da ake tsammani sau jimillar kuɗin da aka yi caca da su; matsakaicin adadin da ake rasawa a cikin zaman wasa ko wani lokaci.Karanta gaba ɗaya → ta 2.70% na jimillar cacakuɗiJimillar cacaJimillar kuɗin da aka yi caca da su a cikin zaman wasa ko wani lokaci, har da kuɗin da aka ci aka sake sawa. Ana kuma kiranta: handle, action.Karanta gaba ɗaya → a wannan caca, 1.35% a teburin la partageƙa'idaLa partageƘa'idar Faransa: idan sifili ya fito, ana mayar da rabin kuɗin cacar ɗaya zuwa ɗaya (even-money). Tana rage fifikon gidan caca a kan waɗannan cace-cace da rabi, zuwa 1.35%.Karanta gaba ɗaya →. Shafukan dabaru suna nuna abin da kowanne ke yi wa siffar zaman wasa.
- p10 −$420
- p25 −$280
- tsakiya −$140
- p75 +$20
- p90 +$140
Dokokin Faransa
Da la partage ko en prisonƙa'idaEn prisonƘa'idar Faransa: idan sifili ya fito, ana riƙe cacar ɗaya zuwa ɗaya (even-money) zuwa juyi na gaba maimakon a rasa ta. Tana rage fifikon gidan caca a kan waɗannan cace-cace da rabi.Karanta gaba ɗaya → fifikon wannan caca yana raguwa da rabi zuwa 1.35%. Wannan shi ne bayani mafi daraja a wannan shafi: idan za ku yi caca a kan ja, ku nemi teburin Faransa.

Jerin 1913
A ranar 18 ga Agusta, 1913 a Monte Carlo baƙi ya fito sau 26 a jere. ʼYan wasa sun cika teburin tun daga kusan baƙi na goma sha biyar, suna caca a kan ja saboda “lokacinsa ya yi”, kuma sun yi asarar miliyoyin francs. Yiwuwar baƙi 26 ita ce (18/37)²⁶, kusan ɗaya cikin miliyan 137; yiwuwar cewa wani, a wani wuri, zai gan shi a ƙarshe kuwa ɗaya ce, wato tabbas.
Tambayoyi
A'a. 18 kowanne.
Ja, da ɗan bambanci kaɗan, a yawancin binciken da aka wallafa game da halayyar teburi. Ba ya canza komai.
Eh, daidai sosai. A kan teburin caca suna kama da a warwatse saboda teburin yana bin tsarin ƙirga.
Ɗan barkwanci

Dabaran ba shi da ƙwaƙwalwa. ʼYan wasa kuwa ƙwaƙwalwarsu ta yi yawa.
Majiyoyi
- 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.