take 4 balls as a group, 3 groups - A B C
3 v$ u- V2 _% f \5.39.217.76weigh A & B (ex. B heavier)6 y$ q9 S) K4 N; {
then weigh B & C (B & C same weight)tvb now,tvbnow,bttvb7 t! s' n5 z, e' o; D
to find which group has the weight difference and find out is it (A is lighter)0 f9 g3 T _6 c5 G+ ^
heavier or lighter
( _4 O% v4 R% \) E$ u- ]公仔箱論壇then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
. S8 |; I. W5 g2 `. c) Y& q公仔箱論壇measure E vs F to find which 1 is lighter.... |