有两道数学题目，求指点

songchangwen · 发表于 2010-11-6 20:38:01

Q3:
Each participant in a certain study was assigned a sequence of 3 different letters from the set {A, B, C, D, E, F, G, H}.If no sequence was assigned to more than one participant and if 36 of the possible sequences were not assigned, what was the number of participants in the study?(Note, for example, that the sequence A, B, C is different from the sequence C, B, A.)

A.20

B.92
C.300

D.372
E.476
Q7:
For a certain race, 3 teams were allowed to enter 3 members each.A team earned 6 – n points whenever one of its members finished in nth place, where 1 ≤ n ≤ 5.There were no ties, disqualifications, orwithdrawals.If no team earned more than 6 points, what is the least possible score a team could have earned?

A.0
B.1
C.2
D.3

E.4

aaronkib · 发表于 2010-11-6 20:49:33

第一題: 順序不同排列A8,3=8!/5!=336 題目說有36個不算那就減去36唄答案300

第二題如果我理解正確，題目是說有三隊各派三人來比賽前五名都可獲得積分(54321) 沒有一隊超過六分，最少得幾分? 那就來排排看囉: 第一名給a隊第二名給b隊第三名如果再給a或b積分就超過六了所以只好給c隊剩下第四名給a隊第五名給b隊。ab兩隊積分都是六，c隊積分最少，三分

另外想請教一下LZ這題是哪來的啊我怎麼覺得讀起來有夠繞...想是不是最近都做狗太久沒做原文了|||

songchangwen · 发表于 2010-11-8 16:53:15

这些题目是从GWD31套来的

有两道数学题目，求指点

谢谢回复

所属分类: GMAT考试

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