put 3 balls on each side,
3 g; g8 C' s. _% ]% {0 tif balance, we can prove that all 6 balls on the 天平 is normal,
' @- v: ~, ?0 l2 H2 j% B5.39.217.76if not balance, we can prove that the 6 balls outside the 天平 is normal.
$ W5 l( ~- [* N+ D0 Nthen use the proved-normal ball on one side and put the other ball on other side
* s, Y1 q- R" K/ P* K公仔箱論壇to determine the abnormal is heavy and light |