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[Issue Essay]

试题详情

题目:

Analytical!

选项:

答案:

提问:

On his drive to work, Leo listens to one of three radio stations, A, B, or C. He first turns to A. If A is playing a song he likes, he listens to it; if not, he turns to B. If B is playing a song he likes, he listens to it; if not, he turns to C. If C is playing a song he likes, he listens to it; if not, he turns off the radio. For each station, the probability is 0.30 that at any given moment the station is playing a song Leo likes. On his drive to work, what is the probability that Leo will hear a song he likes? 这个题目的0.3为什末代指在A station 播放到了自己喜欢的?不太理解0.3到底指的是甚麽

解答:

点赞0
阅读304948
解答: 徐小梅

提问:

第二个式子,我认为是 n=100K+67, 为什么是n=100k+63

解答:

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阅读290869
解答: 徐小梅老师

提问:


解答:

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阅读291111
解答: 徐小梅老师

提问:

我觉得应该选C

解答:

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阅读290663
解答: 徐小梅老师

提问:

这个怎么化简?

解答:

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阅读287983
解答: 徐小梅老师

提问:


解答:

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阅读287781
解答: 金栩竹老师

提问:


解答:

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阅读288028
解答: 金栩竹老师

提问:


解答:

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阅读287898
解答: 金栩竹老师

提问:


解答:

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阅读287961
解答: 金栩竹老师

提问:

英吉老师 这个选啥 好像没看到视频里讲 麻烦解释一下哈 谢谢老师

解答:

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阅读287505
解答: 英吉老师

提问:

请陆旭老师回答一下。 这个题用picking numbers解答是最佳最快方案嘛? 如果picking numbers的话,咋样想到啊?如果推理的话,应该怎么考虑呢?

解答:

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阅读303040
解答: 徐小梅老师

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