put 3 balls on each side,
% P0 `: I: b5 n, [( ^tvb now,tvbnow,bttvbif balance, we can prove that all 6 balls on the 天平 is normal, www3.tvboxnow.com) E* {6 A+ g- K% B1 O: q& H
if not balance, we can prove that the 6 balls outside the 天平 is normal.
& \8 \5 S, ^9 P, [+ C$ k2 i0 Z公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side + U& W1 E" U3 o0 ]# [' _' ~
to determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
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