put 3 balls on each side, tvb now,tvbnow,bttvb4 J3 e) x5 \# g% }
if balance, we can prove that all 6 balls on the 天平 is normal,
/ C) X- [/ e- z d1 C! Q Wif not balance, we can prove that the 6 balls outside the 天平 is normal.tvb now,tvbnow,bttvb( i6 M$ }+ T+ I8 u$ g) Y; c: z
then use the proved-normal ball on one side and put the other ball on other side
, g B8 r) J- o4 f公仔箱論壇to determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
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