put 3 balls on each side, 公仔箱論壇 Q" L& R% e% |2 G8 s1 Y$ j
if balance, we can prove that all 6 balls on the 天平 is normal,
& T3 M8 Y7 q% g1 J* g2 kTVBNOW 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.
5 ~6 W. K" \- J n: _4 _* P6 D: }TVBNOW 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 - @, u0 L$ S, Q) |8 }
to determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
| 
