回複:回複:Erdos 稱金幣題:(3星)

take 0, 1, 2, 4, 8, 16 from each bag and weigh them together.

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回複:回複:回複:Erdos 稱金幣題:(3星) -波斯王子- 給 波斯王子 發送悄悄話 (58 bytes) () 03/10/2010 postreply 20:24:03

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