1st trial - put 6 balls at each side .. take out the lighter 6 balls
# C1 y \4 J3 H% @# A1 N: t Z2 j2nd trial - put the heavier 6 balls by 3 balls at each side
4 J. v8 D* E5 Jlastly, take out the lighter 3 balls.... now left 3 balls..
8 m* d; U9 {) |2 r& Qtvb 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... |