take 4 balls as a group, 3 groups - A B C
/ Q6 s, l* [: H3 N8 n; nTVBNOW 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。weigh A & B (ex. B heavier)公仔箱論壇3 g4 ]2 @' S: c* [, k5 ?
then weigh B & C (B & C same weight)
- P) E: G: Q1 ]) T) l1 Sto find which group has the weight difference and find out is it (A is lighter)TVBNOW 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。9 Q5 e: }4 m j2 w0 t
heavier or lighter: q. j" x8 o$ C$ Y* n( m
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)+ n6 {9 C0 h& b5 d
measure E vs F to find which 1 is lighter.... |