12 balls names A B C D E F G H I J K L公仔箱論壇$ Z5 E* Z5 v" \( R
1St A B C D : E F G H if balance 公仔箱論壇* p! b a+ a9 T
2nd A B (or either 2 of A-H) : I J if again balance if A B > I J (implies the different is light ball is I or J)
! f2 j# S! O, Q* d- _: {% z3rd A (or either A-J) : K if again balance 3rd I : J (the lighter is different)tvb now,tvbnow,bttvb+ @: z5 G: l- |$ v+ }
L is different |