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标题: 请指教，一道数学真题 [打印本页]

作者: 月影无痕 时间: 2006-4-4 07:07 标题: 请指教，一道数学真题

24? At a dinner party, 5 people are to be seated around a circular table. Two seating arrangements are considered different only when the positions of the people are different relative to each other. What is the total number of different possible seating arrangements for the group?

ans: 24

不知道是怎么得来的？

请问circular table的排列组合问题有什么特殊的地方值得注意吗？

多谢！

作者: poorleafs 时间: 2006-4-4 13:51

up!!!!!!!!!!!!!!

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