put 3 balls on each side, 1 N& Q0 ^* B. B* S
if balance, we can prove that all 6 balls on the 天平 is normal,
+ Y$ \+ W6 E4 NTVBNOW 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。if not balance, we can prove that the 6 balls outside the 天平 is normal.
! _9 K S! H) D' z7 l) {公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side
# X1 r; h8 T$ D- j# Etvb now,tvbnow,bttvbto determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
| 
