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look look
sad sad...cant ans
一分钟就答出来了....
easy!
1st divide them into 2 groups, 6 of each side. heavier side will be measured again. 2nd, tree of each side and then so the same thing. at least, three balls left. just weight any two. if one side is heavier then oyu know the answer. otherwise, if they have same weight, the one is not on the scale will be the special ball
i want to know
thz, let's see
I think so easy!
let's see
it is difficult ...
求真理啊
let's see
1

評分次數

  • dxb

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本帖最後由 zq99 於 2011-6-15 02:27 AM 編輯
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# B5 J6 W9 ?) c6 s3 }這個題目不難,只是很複雜
, z& N2 T. z1 \" }) G9 @TVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。主要就是分三組,然後針對每種情況來討論5.39.217.76* K5 g  t3 x& Z! u" v2 ?9 T
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手機打字麻煩,就不寫了
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