1st trial - put 6 balls at each side .. take out the lighter 6 ballstvb now,tvbnow,bttvb' y! b! G4 W& k; W! _
2nd trial - put the heavier 6 balls by 3 balls at each side
1 {2 M' L# T2 v# X7 h9 [9 i公仔箱論壇lastly, take out the lighter 3 balls.... now left 3 balls..公仔箱論壇, Z+ J+ q3 D4 J( h
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... |