12 balls names A B C D E F G H I J K Ltvb now,tvbnow,bttvb' i0 ` j) O# B: J; V0 V% z" W3 _
1St A B C D : E F G H if balance tvb now,tvbnow,bttvb, G( l7 E8 X* R ]4 h. m
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)
, X' @( A( z5 U, A3rd A (or either A-J) : K if again balance 3rd I : J (the lighter is different)
( K" a5 h. b2 V, \. C8 P% d* Z公仔箱論壇L is different |