s2s2 & s2s4 test 5, s2s3 test 4 solutions

   

s2s2 test 5 solutions

 

 

 

test 5 20091022 s2s4 s2s3

 

test 5 20091022 s2s4 s2s3 b

13 thoughts on “s2s2 & s2s4 test 5, s2s3 test 4 solutions

  1. 老师 s2s4 No.4 我还是找不到 6 咯 = =
    s2s2 No.4 要减掉 5*6 是因为 5*6 代表着全部号码是 even number~
    而题目要求是要至少两个所以再减多一次咯 @@

  2. Pingback: S2S2 and S2S3 Permutation and Combination Exercises 2011.10.05 « Chtanmath 我的数学资讯分享网

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