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- UID
- 223424
- 帖子
- 319
- 主题
- 22
- 注册时间
- 2011-7-11
- 最后登录
- 2014-8-7
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You absolutely can add exclusive events, and in fact, we use the fact that we can very often to solve problems. Tautology: You will either study or not study. Probability identity: P(study) + P(not study) = 1. And so on. Also, in response to your response to my third item: GFY  |
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发表于 2013-4-21 18:53
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