put 3 balls on each side,
" E+ H3 @) T! |6 a4 X' u% `) E1 mif balance, we can prove that all 6 balls on the 天平 is normal, 6 u5 Y0 a4 k6 t$ `7 P/ l% j
if not balance, we can prove that the 6 balls outside the 天平 is normal.$ m6 M" y4 ?* G% M
then use the proved-normal ball on one side and put the other ball on other side 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。( |! K$ t9 l, g8 _6 K
to determine the abnormal is heavy and light |
發表於 2011-5-11 04:50 AM
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