put 3 balls on each side,
" j9 t- e2 h' ^2 G; X2 N! xTVBNOW 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, ! |0 J/ x! K2 V1 \, z
if not balance, we can prove that the 6 balls outside the 天平 is normal.- e6 _6 e. C$ j& v
then use the proved-normal ball on one side and put the other ball on other side
+ T- m) s+ W7 h [* `5.39.217.76to determine the abnormal is heavy and light |