put 3 balls on each side, 4 _8 u% U1 ]5 a; ]
if balance, we can prove that all 6 balls on the 天平 is normal,
" N6 v2 P- D7 c1 K1 Mtvb now,tvbnow,bttvbif not balance, we can prove that the 6 balls outside the 天平 is normal.
! m. Z2 N y3 S5 m4 { UTVBNOW 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。then use the proved-normal ball on one side and put the other ball on other side 公仔箱論壇! T' H, d6 X) Y" m/ l" e5 h \2 p
to determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
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