jexmand

1st trial - put 6 balls at each side .. take out the lighter 6 balls公仔箱論壇% U0 U5 l, b( K
2nd trial - put the heavier 6 balls by 3 balls at each side5.39.217.77:8898% {1 Q5 Z0 q7 j6 V! K7 B: ?
lastly, take out the lighter 3 balls.... now left 3 balls..
  T" X" x  X3 E7 d# Z8 Ctvb now,tvbnow,bttvb3rd 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...