put 3 balls on each side, ; H! g/ y: x5 [3 G9 o2 F
if balance, we can prove that all 6 balls on the 天平 is normal,
9 a ^& a2 {. X% w' R% iif not balance, we can prove that the 6 balls outside the 天平 is normal.
! Q: S4 ]# q0 d" x, q& _; b9 rTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。then use the proved-normal ball on one side and put the other ball on other side # [: Z! |: b& M0 _; f6 H) W: R& Z
to determine the abnormal is heavy and light |