take 4 balls as a group, 3 groups - A B C+ L$ m- y' u) K2 W: `
weigh A & B (ex. B heavier)
0 B4 F" N( t% C9 U$ ]then weigh B & C (B & C same weight)! O& c( _: `- [, p
to find which group has the weight difference and find out is it (A is lighter)
5 V2 `* M& u% Kheavier or lighter
, m3 b3 W1 r6 X5 _4 MTVBNOW 含有熱門話題，最新最快電視，軟體，遊戲，電影，動漫及日常生活及興趣交流等資訊。then measure 2 vs 2 balls, EF vs GH, pick out the lighter group (EF lighter)" [- s' t% R8 ]7 t
measure E vs F to find which 1 is lighter.... |
發表於 2006-12-6 04:55 PM
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