take 4 balls as a group, 3 groups - A B C
1 N% D, f! l! `0 n1 o5 a! x/ H公仔箱論壇weigh A & B (ex. B heavier)
9 [1 ~: q! N; {! N; e7 }1 L5.39.217.77:8898then weigh B & C (B & C same weight)
1 p; U# D3 s1 u/ Bto 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。: K7 P* B9 k" q& \: y; E
heavier or lighter3 X& B( f! I2 J7 b4 o: _
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
) F0 ~8 J1 N4 P& @4 P omeasure E vs F to find which 1 is lighter.... |