Masalo: Laba Dersin iyo Chip

Masalada

Waxaad sharadsataa $10 dersinkasharadDersin1–12, 13–24 ama 25–36, wuxuu bixiyaa 2:1.Akhri dhammaan → koowaad, $10 dersinka labaad iyo $1 eberkagiraangirEberHal godka cagaaran ee aan daboolin sharad lacag isle'eg ah, dersin ama tiir; isha faa'iidada kasiinada. Sidoo kale: single zero, 0.Akhri dhammaan →. (a) Waa maxay natiijooyinka suurtagalka ah iyo itimaalkooda? (b) Waa maxay qiimaha la filayoxisaabQiimaha la filayoCelceliska natiijada sharad kasta muddada dheer. −1/37 ee sharadka sharad kasta oo Yurub caadi ah.Akhri dhammaan →? (c) Chip-kalacagChipCalaamad u taagan qadar go'an, oo la dul dhigo shaxda sharadka si sharad loo sameeyo. Sidoo kale: check.Akhri dhammaan → eberku ma hagaajiyaa sharadka?

Xalka (a) iyo (b)

Natiijooyinka: kubbaddaqalabKubbadKubbadda yar ee lagu tuuro jidka iyada oo ka soo horjeedda rotor-ka. Kubbadaha casriga ah waa ivorine ama Teflon, 18–21 mm.Akhri dhammaan → 1–24 (24 godqalabGodMid ka mid ah 37-ka qol ee lambarrada leh ee rotor-ka. Sidoo kale: slot, cup.Akhri dhammaan →): hal dersin wuxuu bixiyaa $20, kan kale wuxuu khasaaraa $10, eberku wuxuu khasaaraa $1: saafi +$9. Kubbadda 25–36 (12 god): labada dersinba way khasaaraan, eberkuna wuu khasaaraa: −$21. Kubbadda eberka (1 god): dersinnadu waxay khasaaraan $20, eberku wuxuu bixiyaa $35: +$15. EV = (24 × 9 + 1 × 15 − 12 × 21)/37 = (216 + 15 − 252)/37 = −21/37 ≈ −$0.57 wareeggii $21 oo la sharadsaday: 2.70%.

Xalka (c)

Chip-ka eberka la'aantiis: (24 × 10 − 13 × 20)/37 = (240 − 260)/37 = −20/37 ≈ −$0.54 $20 oo la sharadsaday, sidoo kale 2.70%. Chip-ka eberku wuxuu natiijada eberka ee −$20 u beddelay +$15 (horumar $35 ah hal jeer 37 kiiba, oo u dhiganta $0.95 wareeggii) wuxuuna ku kacay $1 36-ka wareeg ee kale (oo u dhiganta $0.97 wareeggii). Isbeddelka saafiga ah: −$0.03 wareeggii, taasoo ah 2.70% doollarka dheeraadka ah. Caymiska waxaa loo qiimeeyay si sax ah sida wax kasta oo kale.

Sababta ay tani u guud tahay

Qiimayaasha la filayo way isku darmaan. Koox kasta oo sharadyo isku mar ah waxay leedahay EV la mid ah wadarta EV-yada qaybaha, mid kastaana waa −1/37 sharadkiisa. Sidaas darteed isku-dar kastaa waa −1/37 wadarta sharadka. Ma jiro habayn chips ah oo shaxda sharadkaqalabShaxda sharadkaShaxda sharadka ee daabacan ee miiska. Sidoo kale: table, felt, cloth.Akhri dhammaan → ah, intay doonaan ha le'ekaadeene, oo ka baxsada tan; qalabka Dhisaha Sharadka ayaa xaqiijin doona koox kasta oo aad dhigi karto. Waxa isku-darradu beddelaan waa qaybinta: inta jeer ee aad guulaysato, inta ay le'eg tahay, iyo inta ay xun tahay xaaladda ugu xun.

Su'aal xigta oo ka adag

Hel isku-dar sharadyo caadi ah oo daboola dhammaan 37-ka lambar. Saddex dersin ($10 mid kasta) iyo $1 eberka: mid kasta oo 1–36 ah saafigiisu waa −$1 (hal dersin wuxuu bixiyaa $20, labada kale waxay khasaaraan $20, eberku wuxuu khasaaraa $1), eberkuna saafigiisu waa +$35 − $30 = +$5. EV = (36 × (−1) + 5)/37 = −31/37 $31 oo la sharadsaday: 2.70%. Waxaad dammaanad qaadi kartaa inaadan weligaa la yaabin, weli waxaad bixinaysaa isla qiimaha mudnaantaas.

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