F5 probability question (急)
2011-03-10 4:45 am
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回答 (1)
2011-03-10 5:46 am
✔ 最佳答案
24(a)(i) 1 - 4/7 - 2/7 = 1/7(ii) (4/7)(19/20) = 19/35(b)(i) (4/7)(4/7) = 16/49(ii) 1 - 16/49 = 33/49
(iii) P(both journeys nither pass through the overpass nor the tunnel)
= P(both journeys pass through the hill)
= (1/7)(1/7)= 1/49
收錄日期: 2021-04-26 14:06:43
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110309000051KK01113