标题: [数学] 解答求助！！十万火急！！ [打印本页]

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作者: qq12    时间: 2008-12-28 22:26     标题: 解答求助！！十万火急！！

1/2 + 2/3 + 3/4 + 4/5 + ……+ 2008/2009＝？？.

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