this is too easy!!1 b! x. ]8 P! x c- i. X: f3 o$ A
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1. put 6 at each side.. take the one side which is heavier
8 c$ v7 W7 S3 W: z: GTVBNOW 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。2. put 3 at each side.. also take the heavier side2 F" N [% t" n* y: x) S1 S/ n
3. put 1 at each side.. if the weight balance then the one not put inside is the heavy ball.. else the side which is heavier is the heavier ball.. |
發表於 2009-1-7 05:31 AM
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