put 3 balls on each side, 公仔箱論壇3 H3 D) e3 W/ E1 n# T
if balance, we can prove that all 6 balls on the 天平 is normal,
2 ]' T4 b( y4 e# stvb now,tvbnow,bttvbif not balance, we can prove that the 6 balls outside the 天平 is normal.公仔箱論壇. N) r2 V& y, K$ T1 j. m# g) @
then use the proved-normal ball on one side and put the other ball on other side
) H( C' G5 q/ y. ~- i' z% T6 G9 FTVBNOW 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 |