put 3 balls on each side,
" \4 b0 M+ u- J+ R7 N' \公仔箱論壇if balance, we can prove that all 6 balls on the 天平 is normal,
& S( q W4 v, V0 c8 Jtvb now,tvbnow,bttvbif not balance, we can prove that the 6 balls outside the 天平 is normal.
: @/ G# {! b+ k7 Wthen use the proved-normal ball on one side and put the other ball on other side
; [( \3 o: r5 I4 m1 ftvb now,tvbnow,bttvbto determine the abnormal is heavy and light |