put 3 balls on each side, tvb now,tvbnow,bttvb4 |7 _2 k/ x9 c, G0 G* O
if balance, we can prove that all 6 balls on the 天平 is normal,
1 p ~% o( t" n: l公仔箱論壇if not balance, we can prove that the 6 balls outside the 天平 is normal.! D/ x$ ]0 j9 T" N# \! j% w
then use the proved-normal ball on one side and put the other ball on other side 5.39.217.77:8898+ b& {0 x4 d" p/ h, ^ c/ O
to determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
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