take 4 balls as a group, 3 groups - A B C7 y2 G& [7 F# Y' w. C: }
weigh A & B (ex. B heavier)
* k& b3 L6 [* u" |7 d$ t公仔箱論壇then weigh B & C (B & C same weight)
$ V$ `" f% G+ C2 u L7 \' {: H8 L( [5.39.217.77to find which group has the weight difference and find out is it (A is lighter)
* c1 R: ?. M9 X0 y$ yheavier or lighter
* w; Q5 _7 m4 _: ?6 ^6 p4 p- @9 u公仔箱論壇then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)
# V) g5 p; Z1 c+ f [9 v5 y- M* V5.39.217.77measure E vs F to find which 1 is lighter.... |
發表於 2006-12-6 04:55 PM
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