12 balls names A B C D E F G H I J K L5.39.217.77:8898: |+ Q% a0 p) c4 m( O
1St A B C D : E F G H if balance * R5 y0 k( Y! p
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)
' w; U+ h: E V* L0 `! I1 L3 W" Otvb now,tvbnow,bttvb3rd A (or either A-J) : K if again balance 3rd I : J (the lighter is different)
& P, d& L% D" N( i2 R8 O' jtvb now,tvbnow,bttvbL is different |