5,4,10,8,15,16,( ),( )  A.20,18 B.1

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问题 5,4,10,8,15,16,( ),( )  A.20,18 B.18,32 C.20,32 D.18,64

选项

答案C

解析该数列偶数项是以2为公比的等比数列,奇数项是以5为公差的等差数列,故正确答案为C。
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