put 3 balls on each side,
" K/ M* o2 P' u0 J' H) Y& i2 }if balance, we can prove that all 6 balls on the 天平 is normal, 公仔箱論壇" {5 ]. W2 ^6 u
if not balance, we can prove that the 6 balls outside the 天平 is normal.# V0 d3 D1 b! y! F) d
then use the proved-normal ball on one side and put the other ball on other side
; j# Z: J+ L2 L; A7 sTVBNOW 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 |
發表於 2011-5-11 04:50 AM
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