put 3 balls on each side,
2 C8 ?7 p: e$ C( D& a+ z4 n1 G! Dif balance, we can prove that all 6 balls on the 天平 is normal,
, l- e0 q8 y$ f- _tvb now,tvbnow,bttvbif not balance, we can prove that the 6 balls outside the 天平 is normal.
0 F5 ]5 r% z4 e/ V! Z' _then use the proved-normal ball on one side and put the other ball on other side
$ t5 F7 \8 w, I0 F! T5 m4 nTVBNOW 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。to determine the abnormal is heavy and light |