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put 3 balls on each side,
+ n- z. y4 z! f8 ?& ]' @/ l1 Xtvb now,tvbnow,bttvbif balance, we can prove that all 6 balls on the 天平 is normal, 3 G0 E! u8 b2 d7 U7 ^+ Q# I
if not balance, we can prove that the 6 balls outside 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。: g% l/ H( c, k( M( y
then use the proved-normal ball on one side and put the other ball on other side
$ n& M8 P. m0 E' N9 x公仔箱論壇to determine the abnormal is heavy and light
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