8,49, 247, 991 ,2977, ( ),5965。 A. 3968 B. 4959 C. 4963 D. 5959

作者: tihaiku 人气: - 评论: 0

问题 8,49, 247, 991 ,2977, ( ),5965。 A. 3968 B. 4959 C. 4963 D. 5959

选项

答案 D

解析 8X6 + 1= 49;49X5 + 2 = 247;247X4 + 3 = 991;991X3+4 = 2977;6,5,4,3,...和1， 2，3，4，…均为等差数列，则空缺项为2977X2 + 5 = 5959，验证最后一项应为5959X 1 + 6 = 5965，与原题吻合。因此，本题正确答案为D。

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8,49, 247, 991 ,2977, ( ),5965。 A. 3968 B. 4959 C. 4963 D. 5959

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