take 4 balls as a group, 3 groups - A B C% _( n. i$ L" I- F, Q& c6 N- F3 ~
weigh A & B (ex. B heavier)
% n9 I& K5 i) q. k' H3 e( _then weigh B & C (B & C same weight)9 r+ N, k0 X8 K
to find which group has the weight difference and find out is it (A is lighter)
. a0 `" E/ f1 j% C1 h1 Fos.tvboxnow.comheavier or lighter7 d a9 c8 `& i/ g5 M7 w% ?
then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)公仔箱論壇0 b0 | v4 ^4 G3 n# s1 H8 d
measure E vs F to find which 1 is lighter.... |