12 balls names A B C D E F G H I J K L ) m( @) Z& V1 X5.39.217.771St A B C D : E F G H if balance 0 y- l4 y2 z) V$ G1 a$ |3 h
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) 7 {: i7 O" W& ]5 e2 F5 u6 @3rd A (or either A-J) : K if again balance 3rd I : J (the lighter is different)tvb now,tvbnow,bttvb: c0 u2 U- o# s6 a* W
L is different