this is too easy!!公仔箱論壇; c9 N' c( t" @ }) S {4 G
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1. put 6 at each side.. take the one side which is heavier7 e7 _4 g6 t9 z2 y2 H7 S
2. put 3 at each side.. also take the heavier sidetvb now,tvbnow,bttvb0 T- A2 L1 V- k1 R
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.. |