put 3 balls on each side,
0 I; k. V% ?) d; D" lwww3.tvboxnow.comif balance, we can prove that all 6 balls on the 天平 is normal, www3.tvboxnow.com6 ^; }" N4 l9 c4 F% q& ~$ d
if not balance, we can prove that the 6 balls outside the 天平 is normal.
) F1 W5 J! M% L/ V1 ?公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side
' d5 m L9 b# l( V7 { y2 n- I公仔箱論壇to determine the abnormal is heavy and light |