Papakupu · pāngarau
Uara tūmanako
Te hua toharite mō ia peti i te wā roa. −1/37 o te moni peti mō ia peti Ūropi paerewa.
I roto i te horopaki
EV = p·toa − (1 − p)·moni peti. I te rūreti, nā te ture utungamoniUtungaTe moni ka whakahokia e te peti toa, ka kīia ko “X ki te 1”, hei tāpiri ki te moni peti ka whakahokia.Pānuitia katoatia → ka whakakore te rahi o te peti: ko ia peti he −2.70%.
I mōhio rānei koe
I whānau te ariā i te tau 1654 i ngā reta i waenga i a Pascal rāua ko Fermat mō te tiritiri i te moni o tētahi kēmu mataono i aukatia, te “rapanga o ngā piro”.