1st trial - put 6 balls at each side .. take out the lighter 6 balls
+ Z5 L: i: I5 P/ X. ?& W8 @tvb now,tvbnow,bttvb2nd trial - put the heavier 6 balls by 3 balls at each side
5 t& I% g5 Q$ alastly, take out the lighter 3 balls.... now left 3 balls..
3 h8 u% n, l" e3rd 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... |