[問題] 一題數學題目

看板GRE作者 (巴德爾)時間13年前 (2012/09/09 11:17), 編輯推噓2(2推 0噓 3→)
留言5則, 3人參與, 最新討論串1/1
A quality control analyst collected 200 measurements of length. The range of the 200 measurements is 17 centimeters, and one of the measurements is 49.5 centimeters. Which of the follwing could be another one of the 200 measurements, in centimeters? Indicate ALL such measurements. A. 31.0 B. 32.0 C. 33.0 D. 34.0 答案:CD 想請教各位板大這道題目的算法，謝謝大家! -- When the going gets tough, the tough gets going. -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 118.168.239.104
推
09/09 11:43, , 1F
有200個待測量長度的東西 然後組距是17
09/09 11:43, 1F
→
09/09 11:44, , 2F
也就是最長跟最短的會差17 然後其中一個長度是49.5cm
09/09 11:44, 2F
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09/09 11:44, , 3F
所以不可能是A或B 因為跟49.5cm的差距超過range17了
09/09 11:44, 3F
推
09/09 11:45, , 4F
49.5-17 = 32.5 結案
09/09 11:45, 4F
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09/09 12:00, , 5F
感謝指點迷津: )
09/09 12:00, 5F
※ 編輯: peterkfduh 來自: 118.168.239.104 (09/09 12:09)
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