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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

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提问:

老师,为什么d能加强呢?

解答:

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提问:

老师这道题为什么最小距离和所有可能的距离有什么差别?之前有类题做法A(8,8)/A(3,3)*A(2,2)

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提问:

老师,这道题我没什么思路

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提问:

这个我只能想到p^x和p^y个位数相乘为1,D是怎么做的?

解答:

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