put 3 balls on each side,
2 I; u- F6 b% 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 balance, we can prove that all 6 balls on the 天平 is normal,
( i. O: }6 n) s: g1 k) Aif not balance, we can prove that the 6 balls outside the 天平 is normal.公仔箱論壇$ W* @% k* q/ k" t
then use the proved-normal ball on one side and put the other ball on other side
, G5 Y, f$ I& ]; c/ RTVBNOW 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。to determine the abnormal is heavy and light |