take 4 balls as a group, 3 groups - A B C
4 w; A- O5 q3 S0 J5.39.217.76weigh A & B (ex. B heavier)tvb now,tvbnow,bttvb0 B" K D* ^! s1 O8 e8 `9 u
then weigh B & C (B & C same weight)
2 H U0 q+ m$ u# Q! ktvb now,tvbnow,bttvbto find which group has the weight difference and find out is it (A is lighter)
" ]! M5 _! T' R7 Y6 C2 L5 Eheavier or lighter
2 n* H5 c: @( [7 d! `6 Rtvb now,tvbnow,bttvbthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)公仔箱論壇. ^1 u3 I! @# ?- r3 F7 A+ v
measure E vs F to find which 1 is lighter.... |