take 4 balls as a group, 3 groups - A B C
$ i. `- A ^' [! _公仔箱論壇weigh A & B (ex. B heavier)
. x* f, X4 D3 w5 l, i% Bthen weigh B & C (B & C same weight)
4 t0 Q' d E' C2 c" j* l8 N8 Y公仔箱論壇to find which group has the weight difference and find out is it (A is lighter)公仔箱論壇( Q1 V9 N! U7 \& _
heavier or lighter5.39.217.77:88987 q; V, w+ s0 d' j
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)5.39.217.77:8898+ J. I, j1 u- J4 z# R
measure E vs F to find which 1 is lighter.... |