1,3,4,6,10,12,22,24,( )。A. 58 B. 46 C. 36 D. 32

作者: tihaiku 人气: - 评论: 0
问题 1,3,4,6,10,12,22,24,( )。
选项 A. 58 B. 46 C. 36 D. 32
答案 B
解析 [解一]此数列规律为:第一项加第二项等于第三项,第三项加第四项等于第五 项……即:1 + 3 = 4,4 + 6 = 10,10 + 12 = 22,由此可推出下一项为:22 + 24 = 46。故本题答案为B。 [解二]将原数列分为两组。偶数项为3,6,12,24,是一个公比为2的等比数列。奇数项两两鈦差可得到一个新数列:

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