Koj puas tuaj yeem ntxiv qhov tshwm sim?
Koj puas tuaj yeem ntxiv qhov tshwm sim?

Video: Koj puas tuaj yeem ntxiv qhov tshwm sim?

Video: Koj puas tuaj yeem ntxiv qhov tshwm sim?
Video: Nkauj tawm tshiab _QHov twg los tau _ by Xim vaj & Xeeb vwj & xis nus vaj _ (2020 - 2021 ) 2024, Kaum ib hlis
Anonim

Ntxiv Txoj Cai 1: Thaum ob qhov xwm txheej, A thiab B, sib koom ua ke, qhov qhov tshwm sim uas A or B yuav tshwm sim yog qhov sum ntawm cov qhov tshwm sim ntawm txhua qhov xwm txheej. Cov qhov tshwm sim uas A or B yuav tshwm sim yog qhov sum ntawm cov qhov tshwm sim ntawm txhua qhov xwm txheej, rho tawm qhov tshwm sim ntawm qhov sib tshooj. P(A or B) = P(A) + P(B) - P(A thiab B)

Khaws qhov no hauv kev xav, koj puas ntxiv qhov tshwm sim ua ke?

Yog hais tias tag nrho cov xwm txheej tshwm sim (ib qho "thiab lo lus nug") Muab cov tej zaum ua ke . Yog tias tsuas yog ib qho ntawm cov xwm txheej tshwm sim (ib qho "los yog lo lus nug") Ntxiv tus tej zaum ua ke.

Ib tug kuj yuav nug, koj puas tuaj yeem ntxiv qhov muaj peev xwm ywj pheej? Rau nrhiav cov qhov tshwm sim ntawm ob ywj siab xwm txheej uas tshwm sim nyob rau hauv ib ntus, nrhiav cov qhov tshwm sim ntawm txhua qhov xwm txheej tshwm sim sib cais, thiab tom qab ntawd muab faib rau Qhov yuav tshwm sim . Txoj cai sib npaug no yog txhais cov cim hauv qab no.

Ib yam li ntawd, koj ntxiv ob qhov tshwm sim li cas?

Siv cov qauv kev sib npaug tshwj xeeb. Cia li muab cov qhov tshwm sim ntawm thawj qhov xwm txheej los ntawm qhov thib ob. Piv txwv li, yog tias cov qhov tshwm sim ntawm qhov xwm txheej A yog 2/9 thiab qhov tshwm sim ntawm qhov xwm txheej B yog 3/9 ces qhov qhov tshwm sim ntawm ob qhov xwm txheej tshwm sim tib lub sijhawm yog (2/9) * (3/9) = 6/81 = 2/27.

Dab tsi yog txoj cai sib npaug hauv qhov tshwm sim?

Cov Txoj cai muab faib ntawm Qhov yuav tshwm sim txhais tau tias nrhiav tau qhov tshwm sim ntawm kev sib tshuam ntawm ob qhov xwm txheej, ntau ob tug Qhov yuav tshwm sim . Txhawm rau nrhiav kev sib tshuam ntawm ob qhov xwm txheej, txawm tias lawv muaj kev ywj pheej lossis kev vam khom, ntau ob tug Qhov yuav tshwm sim ua ke.

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