put 3 balls on each side,
: v8 n9 A) Q& \2 ]4 Y公仔箱論壇if balance, we can prove that all 6 balls on the 天平 is normal,
! p/ L. I$ w; @' Y/ i; y- y/ e4 bTVBNOW 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。if not balance, we can prove that the 6 balls outside the 天平 is normal.
% J6 W; M& w' `7 K2 O公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side
- u! u& w9 T1 etvb now,tvbnow,bttvbto determine the abnormal is heavy and light |