1st trial - put 6 balls at each side .. take out the lighter 6 ballstvb now,tvbnow,bttvb% B1 S* c4 u: I) `! }
2nd trial - put the heavier 6 balls by 3 balls at each side公仔箱論壇$ z' _- S* z" D* A6 n# g& U
lastly, take out the lighter 3 balls.... now left 3 balls..
6 b" O7 }: o, P6 A) j2 ]8 }4 a3rd 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... |