1st trial - put 6 balls at each side .. take out the lighter 6 balls
, A- u3 N7 N; ]& e9 C( K# W* C# c5 n+ {公仔箱論壇2nd trial - put the heavier 6 balls by 3 balls at each side
; C) b7 t3 z: i4 l* y Y5.39.217.77:8898lastly, take out the lighter 3 balls.... now left 3 balls..
+ K9 p: r; B8 u1 ]7 O, X3rd trial - put 1 ball on each side, left 1 ball on table. if both sides balance, the ball on table is the heaviest. if one side on the scale is heavier then it is the heaviest... |