Re: [問題] 請問這兩題數學的題意？

看板GRE作者quakepan (電控公關徵抽學伴~^^)時間16年前 (2008/03/24 21:11)推噓2(2推 0噓 5→)

留言7則, 3人參與討論串2/4 (看更多)

※ 引述《shugh (我)》之銘言： : 1. the odds in favor of winning a game can be found by compting the ratio : of the probability of winning to the probability of not winning. : if the probability that Pat will a game is 4/9, what are the odds that : Pat will the game? : (A) 4 to 5 : (B) 4 to 9 : (C) 5 to 4 : (D) 5 to 9 : (E) 9 to 5 : ANS:A : 2. if one number is chosen at random from the first 1000 positive integers, : what is the probability that the number chosen is an integer of both : perfect square and cube? : (A)1/1000 : (B)1/500 : (C)3/1000 : (D)1/250 : (E)1/200 : ANS:C 應該是問 1~1000 這些正整數裡面選一個數他既是某數的平方又是另外一個數的三次方的機率最小公倍數就是六次方所以只有1, 2, 3三個數的六次方在1~1000的範圍內答案就是3/1000 : 拜託了！今天看了好久還是看不太懂...>"< -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.113.55.170

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shugh

03/24 21:16, , 1^F

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quakepan

03/24 21:16, , 2^F

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shugh

03/24 21:37, , 3^F

03/24 21:37, 3^F