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标题: 数学题求助 [打印本页]

作者: feinumberone 时间: 2006-9-24 08:24 标题: 数学题求助

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, or withdrawals. 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

作者: xirui2000 时间: 2006-9-24 13:32

第一道实在想不出来，觉得两个都可以啊`~~`但是答案是B。
第二道我是这样想的，(n+2)^n=125,因为125=5^3,所以(n+2)^n=5^3,所以可以推出来n

应该是3，但是答案是C。我觉得B就可以了啊~~~不明白~~

作者: dreadpower 时间: 2006-9-26 13:37

排名    得分
1          5             C
2          4             B
3          3             A
4          2             B
5          1             A
6          0             C
7          0             C
8          0             A
9          0             B
假设有A , B , C三只队伍，那么第1，2，3名肯定分别是这三只队伍中的队员，否则与总分不超过6分相违背，也就是说一个队伍最少得三分.。 A队三分，B队六分，B队六分

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