1st trial - put 6 balls at each side .. take out the lighter 6 balls
* E3 m9 ?0 p3 z5.39.217.762nd trial - put the heavier 6 balls by 3 balls at each side
* r1 G w& r: D) z i5.39.217.76lastly, take out the lighter 3 balls.... now left 3 balls..
8 R `& h( V6 m& B7 `. P" K3rd 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... |