take 4 balls as a group, 3 groups - A B C公仔箱論壇0 H4 o. n( @" [3 D
weigh A & B (ex. B heavier)
. \; E6 l' q6 F. C9 ?/ Z6 tthen weigh B & C (B & C same weight)! Q2 b& I D4 d
to find which group has the weight difference and find out is it (A is lighter)2 |+ @ |: a# m( Z
heavier or lighter
R) h8 g/ p% T2 ~. g& g( _+ @9 _* Lthen measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter): E! ^, ~8 ^* r$ ]4 q; C5 g0 ~
measure E vs F to find which 1 is lighter.... |
發表於 2006-12-6 04:55 PM
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