Re: [計量] 請教陳向東數學三題
※ 引述《Linbookhow (寂寞黑絲襪)》之銘言:
: 此題為陳向東"最新GRE數學預測模擬試題(一)",p257
: 這題的答案是D,但是我看不懂Quantity A中"the valure of nif"的意思。
: 25. In a group of 100 students, more students are on the fencing team
: than are members of the French club. If 70 are in the club and 20
: are ntither on the team nor in the club, what, is the minimum
: number of students who could, be both on the team and in the club?
: (A) 10
: (B) 49
: (C) 50
: (D) 60
: (E) 61
: 這題的答案是(E),但我怎麼算都弄不出這個答案!
: 請好心的高手幫忙指點~~謝謝了!
(team) + (team&club) + (club) + (都不是) total=100
10 x 70-x 20
如果兩邊人相同:
x=60
阿team>club
x=x+1
=> x=61
or
80≧10+x>70
70≧x>60
最小61,最大70
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◆ From: 58.114.66.64
※ 編輯: jerry771210 來自: 58.114.66.64 (09/11 01:04)
※ 編輯: jerry771210 來自: 58.114.66.64 (09/11 01:09)
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09/12 21:36, , 1F
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09/13 16:29, 5F
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