Kayan aiki · Na'urar lissafi

Na'urar lissafin damar nasara a roulette

Na'urar lissafin damar nasara a roulette na Turai: yiwuwa, ainihin damar nasara da biya ga kowace caca ta yau da kullum.

Caca

yiwuwa

1/37 · 2.70%

ainihin damar rashin nasara

36.00 : 1

gidan caca yana biya

35 : 1

EV a kowace $1

−$0.027

p(babu nasara a juye-juye 37)

36.3%

p(nasara ≥1 a juye-juye 37)

63.7%

Yadda za a karanta sakamakon

Cacar straight up tana rufe rami 1 cikin 37. Biyan adalci zai zama 36.00 zuwa 1; gidan caca yana biyan 35 zuwa 1. Bambancin shi ne fifikon gidan caca na 2.70%, iri ɗaya ga kowace caca a jerin.

Hanya da zato

Dabaran roulette na Turai, ramuka 37 masu daidaiton yiwuwa, juye-juye masu zaman kansu. Dokar biya 36/n − 1. Yiwuwar jerin sakamako iri ɗaya tana amfani da (1 − p)ᵏ.