中国银行
单选题1,4,13,40,121,( )
A.1093
B.364
C.927
D.264
参考答案:B进入在线模考
【答案】B。解析:方法一,等差数列变式。
方法二,等比数列变式。前一项的3倍再加1等于后一项,依此类推,下一项为121×3+1=(364),应选择B。
方法二,等比数列变式。前一项的3倍再加1等于后一项,依此类推,下一项为121×3+1=(364),应选择B。
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11,10,31,70,133,( )
A.136
B.186
C.226
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