take 4 balls as a group, 3 groups - A B Ctvb now,tvbnow,bttvb; S. u" M+ H# ?* v& S- c
weigh A & B (ex. B heavier)
. W! T* J( a* o! [4 R: jthen weigh B & C (B & C same weight)
+ t7 E; `, Z- B) Y9 J% O/ d/ p公仔箱論壇to find which group has the weight difference and find out is it (A is lighter)
, Y7 o; V! E* i公仔箱論壇heavier or lighter
' I% _) O1 R2 U7 _0 Wthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
x$ i5 w% t7 Y- c* l7 w0 u0 C3 Itvb now,tvbnow,bttvbmeasure E vs F to find which 1 is lighter.... |