P(A)=0, where A is a sub set of B and P(B)=1.

送交者: 008 于 2012-08-28, 19:35:23:

回答: 前面说到概率为0的事情008出来了，我虎身一颤：大师你能去请教下湘女阿家吗？由 bluesea 于 2012-08-28, 19:02:03:

This makes sense in math, but when we say it can or cannot happen, we are talking about real world, because there is no such concept as "happen" in math. Then what does P(A)=0 mean in real world? I suspect it can only mean "not possible".

所有跟贴:

概率论认为，对于连续概率分布（例如身高）， - 羽矢 (72 bytes) 2012-08-28, 21:56:58 (681006)
- 连续不连续没关系，就算自然数里取一个的概率也是0 - 008 (223 bytes) 2012-08-28, 22:16:53 (681011)
  - 现实里没有或不考虑无穷多种可能的事儿 (无内容) - whoami (0 bytes) 2012-08-29, 06:37:42 (681053)
- 概率论里的意思当然清楚，但是 - 008 (182 bytes) 2012-08-28, 22:10:47 (681009)
指哪儿打哪儿是0，打哪儿指哪儿是1 (无内容) - whoami (0 bytes) 2012-08-28, 21:40:27 (680999)
- 好象就是这样的。随便指哪儿的概率为1，专门打那儿却不行 (无内容) - 008 (0 bytes) 2012-08-28, 22:13:15 (681010)

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