a box contains 9 balls, 5 of
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a box contains 9 balls, 5 of
2013-09-15 7:02 pm
回答 (1)
2013-09-15 7:17 pm
✔ 最佳答案
(a) The complement of the required event is All balls are red with probability
C(5,3)/C(9,3) = 10/84 = 5/42
So, the required probability is 1 - 5/42 = 37/42 (A)
收錄日期: 2021-04-27 17:43:35
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20130915000010KK01200