1st trial - put 6 balls at each side .. take out the lighter 6 balls
+ g# P5 {2 n9 }7 @- m/ Ctvb now,tvbnow,bttvb2nd trial - put the heavier 6 balls by 3 balls at each side
& f+ _$ M4 I0 p3 _9 F" k; P公仔箱論壇lastly, take out the lighter 3 balls.... now left 3 balls..
0 O, u3 e( H# c, \ w3rd 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... |