PTT職涯區 / GRE (GRE入學考試)

Re: [請教] M3的數學一題

看板GRE (GRE入學考試)作者 (總是昏睡中~)時間17年前 (2007/06/05 00:28), 編輯推噓1(1推 0噓 4→)
留言5則, 2人參與, 最新討論串4/5 (看更多)
我也適用排列組合的算法 (你的是M2的考題) 不過我要問的是17題 17.An airline passenger is planning a trip that involves three connecting flights that leave from Airports A, B, C, respectively. The first flight leaves Airport A every hour, beginning at 8:00 a.m., and arrives at Airport B 5/2 hours later. The second flight leaves Airport B every 20 minutes, beginning at 8:00 a.m., and arrives at Airport C 7/6 hours later. The third flight leaves Airport C every hour, beginning at 8:45 a.m. What is the least total amount of time the passenger must spend between flights if all flights keep to their schedules? A.25 min B.1 hr 5 min C.1 hr 15 min D.2 hr 20min E.3 hr 40 min Ans:B 不知道是不是又是我誤解題目的意思>"< A到B的時間+B到C的時間已經超過3小時了 為什麼可以在1 hr 5 min跑完三個機場(．＿．?) -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.114.192.134
推
06/05 00:36, , 1F
total amount of time the passenger
06/05 00:36, 1F
→
06/05 00:36, , 2F
must spend between flights
06/05 00:36, 2F
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06/05 00:36, , 3F
A 8:00 -> B 10:30 B 10:40 -> C 11:50
06/05 00:36, 3F
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06/05 00:38, , 4F
C 12:45 b等10分 c等55分 -> 1h5min
06/05 00:38, 4F
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06/05 00:44, , 5F
謝謝 原來是我沒看清楚題目 囧
06/05 00:44, 5F
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