jexmand

1st trial - put 6 balls at each side .. take out the lighter 6 balls: a6 m- k, K& x0 {; B  C7 @/ ], Q
2nd trial - put the heavier 6 balls by 3 balls at each side
1 D9 d5 ]8 K0 Vtvb now,tvbnow,bttvblastly, take out the lighter 3 balls.... now left 3 balls..3 J2 P; r# F+ c) l
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...