12 balls names A B C D E F G H I J K L
: h0 h) A$ J) r b2 z1St A B C D : E F G H if balance
% f+ r) F6 p* b5 V' \7 q3 I5.39.217.762nd 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)
' @2 l2 u+ s# k/ F) c V% S0 H+ O8 L8 ]5.39.217.763rd A (or either A-J) : K if again balance 3rd I : J (the lighter is different)tvb now,tvbnow,bttvb' X/ a& w S) _+ d( i9 I' _+ a1 M7 q$ ~
L is different |