take 4 balls as a group, 3 groups - A B C
; `) W6 x/ n: V! zweigh A & B (ex. B heavier)
2 O6 B' [8 b- _( stvb now,tvbnow,bttvbthen weigh B & C (B & C same weight)公仔箱論壇3 j, V8 `' [' v0 N' S- P% _6 _
to find which group has the weight difference and find out is it (A is lighter)5.39.217.77:8898, d# E9 j, O) {
heavier or lighter公仔箱論壇! y- j, f* T0 X( V; S2 v- K' ?/ a
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)5.39.217.77:8898# j4 G6 E- p7 x$ ~# O1 o) E- M9 `
measure E vs F to find which 1 is lighter.... |