1st trial - put 6 balls at each side .. take out the lighter 6 balls
% N4 L' t3 Z# i! u3 Y9 F) l6 N; Ztvb now,tvbnow,bttvb2nd trial - put the heavier 6 balls by 3 balls at each sidetvb now,tvbnow,bttvb6 L: v& K5 L- P8 z" |- {
lastly, take out the lighter 3 balls.... now left 3 balls..% f( j: M9 g/ z6 T8 L+ w
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... |