take 4 balls as a group, 3 groups - A B C
: _0 P. R9 B$ U2 Y2 }8 t公仔箱論壇weigh A & B (ex. B heavier)
: x9 ?+ o+ A4 u& j$ rtvb now,tvbnow,bttvbthen weigh B & C (B & C same weight)8 @8 H# @6 w+ S/ l, M: C
to find which group has the weight difference and find out is it (A is lighter)
8 ^3 D' I7 z8 Oheavier or lighter
1 d% X' L3 o T/ x* y6 g: b5.39.217.77:8898then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)5.39.217.77:8898 a8 E$ Y8 z6 W8 @* W' z
measure E vs F to find which 1 is lighter.... |