Ob qhov xwm txheej yog ywj siab yog tias qhov tshwm sim ntawm qhov thib ob tsis cuam tshuam los ntawm qhov tshwm sim thawj zaug. Yog tias A thiab B yog cov xwm txheej ywj pheej, qhov tshwm sim ntawm ob qho xwm txheej tshwm sim yog qhov khoom ntawm qhov tshwm sim ntawm tus kheej.
Yuav ua li cas koj thiaj paub tias cov xwm txheej muaj kev ywj pheej?
Txheej A thiab B yog kev ywj pheej yog qhov sib npaug P(A∩B)=P(A) · P(B) tuav tseeb. Koj tuaj yeem siv qhov sib npaug los xyuas seb cov xwm txheej puas muaj kev ywj pheej; Muab qhov tshwm sim ntawm ob qhov xwm txheej ua ke kom pom tias lawv sib npaug qhov tshwm sim ntawm ob qho tib si tshwm sim ua ke.
Koj paub li cas yog qhov kev tshwm sim yog ywj siab lossis vam khom?
Feem ntau, qhov qhov xwm txheej yog suav tias yog nyob ntawm seb nws muab cov ntaub ntawv hais txog lwm qhov xwm txheej. Ib qho kev tshwm sim raug suav tias yog kev ywj pheej yog tias nws tsis muaj ntaub ntawv hais txog lwm yam xwm txheej.
Yuav ua li cas yog tias ob qhov xwm txheej tsis muaj kev ywj pheej?
Ob qhov xwm txheej yog ywj pheej yog qhov tshwm sim ntawm ib qho tsis hloov qhov tshwm sim ntawm qhov tshwm sim. Ib qho piv txwv yuav dov ib 2 ntawm ib tug tuag thiab flipping lub taub hau ntawm ib npib. … Yog tias cov xwm txheej tsis muaj kev ywj pheej, ces qhov tshwm sim ntawm ob qho tib si tshwm sim yog qhov khoom ntawm qhov tshwm sim ntawm txhua qhov tshwm sim.
piv txwv ntawm qhov kev tshwm sim ywj pheej yog dab tsi?
Cov xwm txheej ywj pheej yog cov xwm txheej uas nws tshwm sim tsis nyob ntawm lwm yam xwm txheej. Piv txwv li, yog tias peb tig ib npib rau saum huab cua thiab tau txais cov txiaj ntsig zoo li Lub taub hau,ces rov yog peb tig lub npib tab sis lub sij hawm no peb tau txais txiaj ntsig li Tail. Hauv ob qho xwm txheej, qhov tshwm sim ntawm ob qho xwm txheej yog ywj siab ntawm ib leeg.
