( ),13.5,22,41,81

恬恬2019-12-17  14

问题 ( ),13.5,22,41,81

选项 A. 10.25B. 7.25C. 6.25D. 3.25

答案A

解析解题指导: 13.5*2-5=22,22*2-3=41,41*2-1=81,则2X-7=13.5,X=10.25,故答案为A。
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