put 3 balls on each side,
7 ^5 n2 j# {6 k" E3 X6 ftvb now,tvbnow,bttvbif balance, we can prove that all 6 balls on the 天平 is normal, TVBNOW 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。3 t( G5 i% {3 g& J: v- l( o
if not balance, we can prove that the 6 balls outside the 天平 is normal.
1 @2 X$ u1 r ithen use the proved-normal ball on one side and put the other ball on other side
: [! H) T+ b& [5 uto determine the abnormal is heavy and light |