put 3 balls on each side,
8 Q& ^6 m5 V. O3 o* q) D5.39.217.76if balance, we can prove that all 6 balls on the 天平 is normal,
/ c6 Y* A2 H& e. b3 btvb now,tvbnow,bttvbif not balance, we can prove that the 6 balls outside the 天平 is normal.
3 e7 b2 `% E, Z. W& e. c4 g, U+ u) [" Ethen use the proved-normal ball on one side and put the other ball on other side
4 y8 s* y4 O# C5 p7 H, d: p2 hto determine the abnormal is heavy and light |