put 3 balls on each side,
4 ~; y- g6 ]# I* ~4 }2 Aif balance, we can prove that all 6 balls on the 天平 is normal, 公仔箱論壇7 N+ O& X: ~3 Y% h) N8 Z
if not balance, we can prove that the 6 balls outside the 天平 is normal.
7 d! K% l% ^5 Q, K: O# [公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side 公仔箱論壇: a5 v ^9 V" J/ F
to determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
| 
