put 3 balls on each side,
+ S n& ?( H5 _4 G& gif balance, we can prove that all 6 balls on the 天平 is normal,
6 A" r+ H" g) g# |- c1 Itvb now,tvbnow,bttvbif not balance, we can prove that the 6 balls outside the 天平 is normal.
* s1 I7 O+ C# a7 x& I5 R, @( {( Mwww3.tvboxnow.comthen use the proved-normal ball on one side and put the other ball on other side www3.tvboxnow.com" ]& h5 V6 n U$ b
to determine the abnormal is heavy and light |