sitsky

take 4 balls as a group, 3 groups - A B Ctvb now,tvbnow,bttvb, p, v9 q% l6 F" W9 c
weigh A & B (ex. B heavier): L2 b# F& S. l) m/ t  l
then weigh B & C (B & C same weight)
3 n( p0 C( t, K公仔箱論壇to find which group has the weight difference and find out is it (A is lighter)
, F# f+ O. N# s) nheavier or lighter
& |+ y; D3 i$ V5 v- {  ^* s5.39.217.77:8898then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)公仔箱論壇# k$ N, h3 j" S8 W1 P) W& ^8 `
measure E vs F to find which 1 is lighter....