sitsky

take 4 balls as a group, 3 groups - A B C
% r6 q5 i( a3 C1 R) Dtvb now,tvbnow,bttvbweigh A & B (ex. B heavier)tvb now,tvbnow,bttvb" ]7 J3 s: b0 R, O# ]+ a6 [
then weigh B & C (B & C same weight)公仔箱論壇8 Q6 _% Y* N; ^7 z7 K9 F- f" H% [
to find which group has the weight difference and find out is it (A is lighter)公仔箱論壇- K  g9 c: f; e: A: @
heavier or lighter
* S/ u" _9 M# L9 e" ]: c& ?then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)公仔箱論壇9 A- [. t) u, {# B4 i" ~# ]
measure E vs F to find which 1 is lighter....