Palopalema: Tasini ʻe Ua mo ha Sipi ʻe Taha

Ko e palopalema

ʻOku ke peti ʻa e $10 ki he ʻuluaki tasinipetiTasini1–12, 13–24 pe 25–36, totongi ʻo e 2:1.Lau kotoa →, $10 ki hono ua ʻo e tasini mo e $1 ki he noaveʻetekaNoaKo e luo lanu mata pē ʻe taha ʻoku ʻikai kāpui ʻe ha peti totongi tatau, peti tasini pe peti kōlomu; ko e tupuʻanga ia ʻo e tuʻunga lelei ʻo e kasino. ʻOku toe ui: noa ʻe taha, 0.Lau kotoa →. (a) Ko e hā ʻa e ngaahi ola ʻe lava ke hoko mo honau ngalingali? (b) Ko e hā ʻa e mahuʻinga ʻamanekinamatematikaMahuʻinga ʻamanekinaKo e ola ʻavalisi ʻi he peti takitaha ʻi he taimi lōloa. −1/37 ʻo e peti ki he peti ʻIulope angamaheni kotoa pē.Lau kotoa →? (c) ʻOku fakalelei ʻe he sipipaʻangaSipiKo ha fakaʻilonga ʻoku fakafofongaʻi ha paʻanga paʻu, ʻoku tuku ki he palani ʻo e tēpile ke fai ʻaki ha peti. ʻOku toe ui: check.Lau kotoa → ʻi he noa ʻa e peti?

Solovaʻanga (a) mo e (b)

Ngaahi ola: pulumeʻangāuePuluKo e kiʻi pulu siʻisiʻi ʻoku tolongi ʻi he hala ʻo fehangahangai mo e konga vilo. Ko e ngaahi pulu ʻo onopooni ʻoku ngaohi ʻaki ʻa e ivorine pe Teflon, 18–21 mm.Lau kotoa → ʻi he 1–24 (luomeʻangāueLuoKo e taha ʻo e ngaahi luo ʻe 37 ʻoku fakafika ʻi he konga vilo. ʻOku toe ui: slot, cup.Lau kotoa → ʻe 24): ʻoku totongi ʻe ha tasini ʻe taha ʻa e $20, ʻoku mole ʻa e $10 ʻi he tasini ʻe taha, ʻoku mole ʻa e $1 ʻi he noa: tupu +$9. Pulu ʻi he 25–36 (luo ʻe 12): ʻoku mole ʻa e ongo tasini, ʻoku mole ʻa e noa: −$21. Pulu ʻi he noa (luo ʻe 1): ʻoku mole ʻa e $20 ʻi he ongo tasini, ʻoku totongi ʻe he noa ʻa e $35: +$15. EV = (24 × 9 + 1 × 15 − 12 × 21)/37 = (216 + 15 − 252)/37 = −21/37 ≈ −$0.57 ʻi he vilo ʻi he $21 naʻe peti: 2.70%.

Solovaʻanga (c)

ʻI he ʻikai ha sipi ʻi he noa: (24 × 10 − 13 × 20)/37 = (240 − 260)/37 = −20/37 ≈ −$0.54 ʻi he $20 naʻe peti, ko e 2.70% foki. Kuo liliu ʻe he sipi ʻi he noa ʻa e ola noa ʻo e −$20 ki he +$15 (ko ha fakalelei ʻo e $35 ʻi he tuʻo taha ʻi he 37, ʻoku mahuʻinga ʻaki ʻa e $0.95 ʻi he vilo) pea kuo fakamole ʻa e $1 ʻi he toenga vilo ʻe 36 (ʻoku mahuʻinga ʻaki ʻa e $0.97 ʻi he vilo). Liliu kakato: −$0.03 ʻi he vilo, ʻa ia ko e 2.70% ʻo e tola lahi ange. ʻOku totongi ʻa e malu ko ʻeni ʻo tatau tofu pē mo e meʻa kotoa pē kehe.

Ko e ʻuhinga ʻoku moʻoni ai ʻeni ki he meʻa kotoa

ʻOku fakataha ʻa e ngaahi mahuʻinga ʻamanekina. Ko ha fakatahaʻi pē ʻo ha ngaahi peti ʻi he taimi tatau, ʻoku tatau hono EV mo e fakakātoa ʻo e EV ʻo hono ngaahi konga, ʻa ia ko e taki taha ko e −1/37 ʻo hono peti. Ko ia ko ha fakatahaʻi pē ko e −1/37 ia ʻo e fakakātoa ʻo e peti. ʻOku ʻikai ha fokotuʻutuʻu ʻo e ngaahi sipi ʻi he palani ʻo e tēpilemeʻangāuePalani ʻo e tēpileKo e palani peti kuo paaki ʻi he tēpile. ʻOku toe ui: tēpile, felt, cloth.Lau kotoa →, neongo pe ʻoku fiha, ʻoku hao mei ai; ʻe fakamoʻoniʻi ia ʻe he Meʻa Langa Peti ki ha fakatahaʻi pē ʻoku ke lava ʻo tuku. Ko e meʻa ʻoku liliu ʻe he ngaahi fakatahaʻi ko e tufaki: ko e tuʻo fiha hoʻo ikuna, ʻe fiha, pea ʻe kovi fēfē ʻa e meʻa kovi taha.

Ko ha fehuʻi hoko faingataʻa ange

Kumi ha fakatahaʻi ʻo e ngaahi peti angamaheni ʻoku ne ʻufiʻufi ʻa e fika kotoa ʻe 37. Tasini ʻe tolu ($10 taki taha) fakataha mo e $1 ki he noa: ko ha fika pē mei he 1–36 ʻoku tupu −$1 (ʻoku totongi ʻe ha tasini ʻe taha ʻa e $20, ʻoku mole ʻa e $20 ʻi he tasini ʻe ua kehe, ʻoku mole ʻa e $1 ʻi he noa), pea ko e noa ʻoku tupu +$35 − $30 = +$5. EV = (36 × (−1) + 5)/37 = −31/37 ʻi he $31 naʻe peti: 2.70%. ʻE lava ke ke fakapapauʻi ʻe ʻikai ʻaupito ke ke ʻohovale, ka ʻoku ke kei totongi pē ʻa e totongi tatau ki he monūʻia ko iá.

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