probability一問
回答 (1)
2008-02-24 10:07 pm
✔ 最佳答案
你條問題有點兒不清晰，我有兩個答案Ans.1
如果問題係問三粒加埋係1,probability 係0
因為冇可能出現
Ans.2
三粒至少有一個1,probability 係91/216
Steps:
probability
=(1/6x5/6x5/6)+(5/6x1/6x5/6)(5/6x5/6x1/6)(1/6x1/6x5/6)
(1/6x5/6x1/6)(5/6x1/6x1/6)(1/6x1/6x1/6)
=91/216
參考: me
收錄日期: 2021-04-14 20:08:40
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20080224000051KK01835