put 3 balls on each side, 5.39.217.77:8898' F2 ~' R" ]4 P, n
if balance, we can prove that all 6 balls on the 天平 is normal,
6 [9 c! Q9 d; o9 U* Z0 F, E+ ]- jif not balance, we can prove that the 6 balls outside the 天平 is normal.公仔箱論壇/ i$ R7 u6 S [2 s+ v$ j: H
then use the proved-normal ball on one side and put the other ball on other side ) B. P8 e7 ~6 ?( B3 x, \
to determine the abnormal is heavy and light |