fellatioho

put 3 balls on each side,
* v9 q4 r5 r% m6 E2 V, Rif balance, we can prove that all 6 balls on the 天平 is normal, 3 U% J  h3 a. D: m- E* H6 f, O& T
if not balance, we can prove that the 6 balls outside the 天平 is normal.
. Y) f5 P+ ~: X3 ]/ c. Z6 ]公仔箱論壇then use the proved-normal ball on one side and put the other ball on other side tvb now,tvbnow,bttvb; [2 u' X, @3 E. O7 G
to determine the abnormal is heavy and light