put 3 balls on each side,
& B0 g2 }( Y, d* j4 W/ ?www3.tvboxnow.comif balance, we can prove that all 6 balls on the 天平 is normal,
$ C) y6 `2 q2 C' J+ `; Fwww3.tvboxnow.comif not balance, we can prove that the 6 balls outside the 天平 is normal.
' D" S4 n$ \/ x5 t3 L/ kthen use the proved-normal ball on one side and put the other ball on other side
" u w8 G6 @, u4 ?6 C公仔箱論壇to determine the abnormal is heavy and light |