take 4 balls as a group, 3 groups - A B C
$ ~/ Q, ~. M2 X: P/ c8 s, `weigh A & B (ex. B heavier)
; x( i8 O/ x5 p* O2 Atvb now,tvbnow,bttvbthen weigh B & C (B & C same weight)
d( V1 Z$ k' U公仔箱論壇to find which group has the weight difference and find out is it (A is lighter)
3 e0 t2 A4 `8 n! @8 L7 jTVBNOW 含有熱門話題,最新最快電視,軟體,遊戲,電影,動漫及日常生活及興趣交流等資訊。heavier or lighter
0 I9 I0 x8 w# [公仔箱論壇then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
/ I5 c4 V7 x5 c5 G; Z8 btvb now,tvbnow,bttvbmeasure E vs F to find which 1 is lighter.... |