jexmand

1st trial - put 6 balls at each side .. take out the lighter 6 balls
* N! g6 g, `. b; F! K2 A# hTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。2nd trial - put the heavier 6 balls by 3 balls at each side
! u( H+ N) d7 v1 r* M5.39.217.77lastly, take out the lighter 3 balls.... now left 3 balls..公仔箱論壇% f. q& b+ v# ]! O  n8 {* p
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...