1st trial - put 6 balls at each side .. take out the lighter 6 balls
5 L; d! y1 K* o* V P2nd trial - put the heavier 6 balls by 3 balls at each side
$ E5 ?3 ?% Z" u% g4 C, X3 w9 Ptvb now,tvbnow,bttvblastly, take out the lighter 3 balls.... now left 3 balls..5.39.217.76# c) L1 h$ x; N5 h
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... |