1st trial - put 6 balls at each side .. take out the lighter 6 balls5.39.217.77:8898 x2 P* y* ? x6 R! n
2nd trial - put the heavier 6 balls by 3 balls at each side
0 y4 q; }/ c$ M3 N5 r8 x) }- k- T公仔箱論壇lastly, take out the lighter 3 balls.... now left 3 balls..2 [) ]8 v6 t1 I" D
3rd 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... |