jexmand

1st trial - put 6 balls at each side .. take out the lighter 6 balls
& n/ F4 R# m( l1 s: _& jtvb now,tvbnow,bttvb2nd trial - put the heavier 6 balls by 3 balls at each side
! d. a% y9 ^9 G' [: e3 Y5 i公仔箱論壇lastly, take out the lighter 3 balls.... now left 3 balls..
- `1 g& H. V, awww2.tvboxnow.com3rd 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...