this is too easy!!
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9 ^, c1 W. a+ ^- n, ~" l9 [1. put 6 at each side.. take the one side which is heavier! Y0 I* D9 v7 ?5 ?7 f% J% j
2. put 3 at each side.. also take the heavier sideTVBNOW 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。$ P* z7 q6 N0 s7 _1 I9 J' Q/ d0 p
3. put 1 at each side.. if the weight balance then the one not put inside is the heavy ball.. else the side which is heavier is the heavier ball.. |
發表於 2009-1-7 05:31 AM
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