take 4 balls as a group, 3 groups - A B Ctvb now,tvbnow,bttvb2 D, Z* P3 g5 t7 N" {2 p" u. p2 G
weigh A & B (ex. B heavier)4 K9 c9 j# g6 Y9 s! i% `5 Y2 H
then weigh B & C (B & C same weight)0 ]2 k7 _: ?3 ^* R/ Q& m4 G; i
to find which group has the weight difference and find out is it (A is lighter)
( d {; h P0 x+ y5 u' etvb now,tvbnow,bttvbheavier or lighter
5 {0 [5 v1 o9 `/ y3 [+ |tvb now,tvbnow,bttvbthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
/ l* ]5 [: `9 T3 J公仔箱論壇measure E vs F to find which 1 is lighter.... |