put 3 balls on each side, 8 l5 Z0 f) V R2 }
if balance, we can prove that all 6 balls on the 天平 is normal, tvb now,tvbnow,bttvb6 V4 k" M# v8 K! G
if not balance, we can prove that the 6 balls outside the 天平 is normal.
% ?; R- E' |8 {+ Z公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side
% j3 f% {: v2 l0 q! S; ]) \% |tvb now,tvbnow,bttvbto determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
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