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众所周知 ,如果一个命题是正确的 ,其逆命题和否命题不一定正确 .特别是在概率中 ,一些正确命题的逆命题和否命题具有更大的迷惑性 ,有时直观看起来简直能“以错乱真”.例 原命题 :“必然事件的概率为 1”易见这个命题是正确的 .逆命题 :“概率为 1的事件为必然事件”;否命题
As we all know, if a proposition is correct, its inverse proposition and no proposition are not necessarily correct. Especially in probabilities, converse propositions and false propositions of some correct propositions are more confusing, and sometimes intuitively it seems that they can be confused. True. The original proposition: “The probability of an inevitable event is 1.” It is easy to see that this proposition is correct. Converse: “The event with a probability of 1 is an inevitable event”; no proposition