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    #跟帖#  Sorry, the answer is wrong. Find a mistake. [腦筋急轉] - 群眾丁(0 bytes ) 2007-10-29
    #跟帖#  The answer is 1/sqrt(6) [腦筋急轉] - 群眾丁(0 bytes ) 2007-10-29
    #跟帖#  Sorry A little correction:A Russian Mathematical Olympiad Proble [腦筋急轉] - 群眾丁(287 bytes ) 2007-09-12
    A Russian Mathematical Olympiad Problem [腦筋急轉] - 群眾丁(324 bytes ) 2007-09-12
    #跟帖#  回複:求九個一位數 [腦筋急轉] - 群眾丁(17 bytes ) 2007-09-12
    #跟帖#  回複:See this one [腦筋急轉] - 群眾丁(18 bytes ) 2007-08-16
    #跟帖#  回複:什麽東西? [腦筋急轉] - 群眾丁(8 bytes ) 2007-08-16
    #跟帖#  回複:數矩形 [腦筋急轉] - 群眾丁(181 bytes ) 2007-08-16
    #跟帖#  回複:數矩形 [腦筋急轉] - 群眾丁(41 bytes ) 2007-08-16
    #跟帖#  回複:簡單算了一下。。。 [腦筋急轉] - 群眾丁(122 bytes ) 2007-05-02
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