this is too easy!!
n* \9 t7 n4 C; u( f$ k2 _4 }' JTVBNOW 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。tvb now,tvbnow,bttvb8 N& u! }- }. K" b$ K2 C8 ^
1. put 6 at each side.. take the one side which is heavier3 m, U" F# h7 z+ N; r) ^
2. put 3 at each side.. also take the heavier side
0 F8 v4 Y4 j! W3 k `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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