[中學] 一題數列問題
從6個數：1,3,9,27,81,243中每次取N個數求和(每個數只取一次)可以得到一個新的數
請問
(1)由小到大依次為：1,3,4,9,10,12,13,27......，求第39個數為多少？
(2)共可得到新數幾個？
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◆ From: 140.122.45.89
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07/29 14:09, , 1F
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07/29 14:13, , 2F
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07/29 14:33, 8F
※ 編輯: wonson0902 來自: 140.122.45.89 (07/29 14:34)
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07/29 14:33, , 9F
07/29 14:33, 9F
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07/29 14:35, 12F