→ yhliu : 貝氏定理吧. 09/30 22:38
an urn contains two white balls and two black balls,A number is randomly
chosen from he set(1,2,3,4)and many balls are removed from the urn.
Find the probability that the number i,i=1,2,3,4 was chosen if a least
one white ball was removed from the urn.
麻煩
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※ 編輯: BROVEFUCK (223.136.25.74), 09/30/2015 11:10:57