take 4 balls as a group, 3 groups - A B C
6 l# n; m* b2 C. H& dtvb now,tvbnow,bttvbweigh A & B (ex. B heavier)
! h/ u: K" H3 p0 _! F: g5.39.217.77:8898then weigh B & C (B & C same weight)
8 G8 w+ ?+ ^9 K; y+ l8 E) P3 fto find which group has the weight difference and find out is it (A is lighter)
# L! O# Y! `8 k; y7 K* L# B公仔箱論壇heavier or lighter
6 K* X5 N1 d: F: ]5 fthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)tvb now,tvbnow,bttvb& Q) q& W0 i( B8 @( G. y
measure E vs F to find which 1 is lighter.... |