还没有登录哦!

[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172317
解答: 徐小梅

提问:

请问这道题的解题思路

解答:

点赞0
阅读239805
解答: 徐小梅老师

提问:

第13题: 听老师jj课里讲的说选C,我不太明白条件2的分析,老师上课说条件2,若st同号,上式取等号,若st一正一负时,上式是小于号。那不就可以通过条件2直接判断上式大于号不成立吗,也就是答案是No。请老师更正下我的思路。

解答:

点赞0
阅读248183
解答: 徐小梅老师

提问:

请徐老师讲下这两道题:这两个都做对了 但是感觉做的时候不太自信,想了一会,想听下老师的思路。谢谢老师!

解答:

点赞0
阅读248043
解答: 徐小梅老师

提问:

麻烦徐老师讲一下Q9,选了E。我的思路是分析rounding后estimate的最大和最小的差值。

解答:

点赞0
阅读201218
解答: 徐小梅老师

提问:

请徐老师讲一下Q7思路。读题是不是很明白题意说的到head的概率不是1/2。

解答:

点赞0
阅读202508
解答: 徐小梅老师

提问:

请问这道题的解题思路

解答:

点赞0
阅读231328
解答: 徐小梅老师

提问:

老师 这题解题思路是?

解答:

点赞0
阅读232499
解答: 徐小梅老师

提问:

老师好,请教下这道题的做题思路

解答:

点赞0
阅读234605
解答: 徐小梅老师

提问:

根据题意得到r=p/1.25(100-p)+p 最后化简为r=4p/500-p,如何得到400p/500-p呢

解答:

点赞0
阅读198781
解答: 徐小梅老师

提问:

请问王文静老师 这题c选项不应该是用deep吗

解答:

点赞0
阅读308444
解答: 王文静老师

问个问题

点我领取
免费专项课程
在线咨询