1 . 幻方最早起源于我国,由正整数1,2,3,……,
这
个数填入
方格中,使得每行、每列、每条对角线上的数的和相等,这个正方形数阵就叫
阶幻方.定义
为
阶幻方对角线上所有数的和,如
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/0dfc5932-61b2-4824-9e7c-21db4b9e3658.png?resizew=134)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ceef1abeeef220b4fe5f7d96feedd90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/767f5a4746f04db68386fac3970b1ed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d4fc8faefb26b233d4aa9dbef043aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4408d4f89c5f9e4a2cc0a04b24852d80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64853454dd85c245f96bd0e11166c4b8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/26/0dfc5932-61b2-4824-9e7c-21db4b9e3658.png?resizew=134)
A.55 | B.500 | C.505 | D.5050 |
您最近一年使用:0次
2020-04-14更新
|
646次组卷
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6卷引用:四川省泸州市泸县2021-2022学年高三上学期期末数学理科试题
四川省泸州市泸县2021-2022学年高三上学期期末数学理科试题2020届四川省广安市高三第二次诊断性考试试题理科数学试题2020届四川省眉山市高三第三次诊断性考试数学(理)试题2020届四川省遂宁市高三二诊数学(理)试题(已下线)第49练 推理与证明-2021年高考数学(理)一轮复习小题必刷2020届四川省资阳高三三诊数学(理科)试题
2 . 已知数列1,1,2,1,2,4,1,2,4,8,1,2,4,8,16,…,其中第一项是
,接下来的两项是
,再接下来的三项是
,依此类推,记此数列为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7419eab350c5266ebd58156ea7e43a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71c187044e689bbe78aededb6b48f877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acdc0a3d74c8452485651263b7ea2e01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec55f0abe141c86085fbe360d064bd17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef7419eab350c5266ebd58156ea7e43a.png)
A.1 | B.2 | C.4 | D.8 |
您最近一年使用:0次
2020-03-03更新
|
386次组卷
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2卷引用:四川省泸州市2018-2019学年高一下学期期末数学试题