put 3 balls on each side, 5 D- m6 t. B: h3 n. ?
if balance, we can prove that all 6 balls on the 天平 is normal,
0 u( y) j3 J/ E/ [6 Fif not balance, we can prove that the 6 balls outside the 天平 is normal.公仔箱論壇3 u+ ~; k0 O- p2 U: x- f
then use the proved-normal ball on one side and put the other ball on other side
$ T4 M: p3 e4 s$ q0 X; o/ h: m4 Yto determine the abnormal is heavy and light |