take 4 balls as a group, 3 groups - A B Ctvb now,tvbnow,bttvb% {2 u# i0 h4 ~2 u
weigh A & B (ex. B heavier)
8 w- ` [' |* m4 T9 z0 m: Mthen weigh B & C (B & C same weight)
' I6 M! A- M: a; z5.39.217.76to find which group has the weight difference and find out is it (A is lighter)
0 s. N1 [( g8 s2 R+ U) ]tvb now,tvbnow,bttvbheavier or lighter
. H% I- D2 o- r B/ v0 \6 wtvb now,tvbnow,bttvbthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)1 z& z- n) f! f# [7 H: \& C( c5 C
measure E vs F to find which 1 is lighter.... |
發表於 2006-12-6 04:55 PM
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