-2,1,10,37,118,( )。A. 155 B. 361 C.192

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问题 -2,1,10,37,118,( )。A. 155 B. 361 C.192 D.166

选项

答案B

解析本数列为二级等比数列,即[img]/upload/tiku/150/2519379_1.jpg[/img]3,9,27,81,x是公比为3的等比数列,x=81x3 = 243,则空缺项为118 + 243 = 361。
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