put 3 balls on each side,
4 s' M: t+ g4 W; o( E$ G3 K' ]: A1 |) f+ Oif balance, we can prove that all 6 balls on the 天平 is normal,
5 p) b/ n8 W! w5 K8 H6 j K. Qtvb now,tvbnow,bttvbif not balance, we can prove that the 6 balls outside the 天平 is normal.
0 K) ^/ L6 ^+ e7 M& v% I: o/ Dos.tvboxnow.comthen use the proved-normal ball on one side and put the other ball on other side tvb now,tvbnow,bttvb0 R- }) M8 \2 ]" V! p
to determine the abnormal is heavy and light |