1st trial - put 6 balls at each side .. take out the lighter 6 balls
# T( u5 q, b! F% w9 J- a公仔箱論壇2nd trial - put the heavier 6 balls by 3 balls at each side公仔箱論壇8 f! g2 ~$ z7 _. C4 ^
lastly, take out the lighter 3 balls.... now left 3 balls..
% x0 L A4 o, O3 a! z7 b公仔箱論壇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... |