20,26,35,50,71,(  )。A.95 B.104 C.100 D.102

作者: tihaiku 人气: - 评论: 0
问题 20,26,35,50,71,(  )。
选项 A.95 B.104 C.100 D.102
答案 B
解析 前后两项之差的数列为3×2,3×3,3×5,3×7,其中2,3,5,7是质数数列,依此规律空缺项为71+3×11=104。

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