1st trial - put 6 balls at each side .. take out the lighter 6 ballstvb now,tvbnow,bttvb. J( m3 o* A& k! e. c% ?
2nd trial - put the heavier 6 balls by 3 balls at each side公仔箱論壇6 R! X& s$ B7 A G) _
lastly, take out the lighter 3 balls.... now left 3 balls..
6 w% u/ B+ t3 f, \ u/ ^- j4 {" g3rd 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... |