1st trial - put 6 balls at each side .. take out the lighter 6 balls
7 z% d! q! Q* g# r公仔箱論壇2nd trial - put the heavier 6 balls by 3 balls at each side
$ T# n7 L3 Y6 P1 x: M公仔箱論壇lastly, take out the lighter 3 balls.... now left 3 balls..
9 [4 i) c7 `' c; o) B: }tvb 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... |