take 4 balls as a group, 3 groups - A B Ctvb now,tvbnow,bttvb2 `3 O& D( n% T9 k) o- h
weigh A & B (ex. B heavier)
6 }" R& W& C- t6 Ethen weigh B & C (B & C same weight)
6 X; o* c9 |' C: q( D* ito find which group has the weight difference and find out is it (A is lighter)
8 K8 C1 _$ B0 p+ m9 |公仔箱論壇heavier or lighter
. m, @2 e9 U8 S: s" Nthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
- o( ^/ z' A. x5 H( P }8 `measure E vs F to find which 1 is lighter.... |