take 4 balls as a group, 3 groups - A B C
9 o: n% U/ K; k* ^% e, A0 Xos.tvboxnow.comweigh A & B (ex. B heavier)公仔箱論壇1 Z' L! N! x4 p. _
then weigh B & C (B & C same weight)
1 x$ p- P% p8 M9 |9 ]6 i( jto find which group has the weight difference and find out is it (A is lighter)4 l/ A5 R1 H% a5 P5 K
heavier or lighter
6 K0 h; N1 i# a# N5 y& a, |6 |os.tvboxnow.comthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)3 t" D1 |; i; w' f! a
measure E vs F to find which 1 is lighter.... |