2006高三·浙江·竞赛
1 . 设有5枚无区别的棋子放在5 ×5的棋盘的小方格中(如图1),放棋子的规则是,每行每列放且仅放一枚子,同时,不允许放在黑色小方格内 .则共有__________ 种放法.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/a331fd25-a4e2-4ebf-af33-9a08a9b6f5d9.png?resizew=160)
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2 . 已知复数
为虚数单位),且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec70e73c7f280372d28a98d0d3722d95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51a366fd389603902c1db710726ed6eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfd4a842fda2524039430cac053ee979.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
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2011高三·浙江·竞赛
3 . 某程序框图如图.现将输出
值依次记为:
,
,
,
,
若程序运行中输出一个数组是
,则数组中的
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/53637853-7f15-4096-b7db-24a41e853108.png?resizew=294)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82a79a33a83a7ba57a34b5093d1d1d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56720e2f2b0ddd72156da495923698da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2852ae85cfcc804b3192ea8543c88938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92abae836b8026511113ad8c3ea23028.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37e5531913e2f170465d8df01795cd51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5660ceaf9910eb0fcc542d55f40e522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec0618ae3a4fde6d6220010af229b9a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/53637853-7f15-4096-b7db-24a41e853108.png?resizew=294)
A.64 | B.32 | C.16 | D.8 |
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12-13高三·江苏·课后作业
4 . 给定两个数列
,
满足
,
,
.证明对于任意的自然数n,都存在自然数
,使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9db87ffceab6741bf496f69449cc728d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4e5b6a7d5f02b1bcad4651da55d7018.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eae65e482011240d754603939aff90b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb93fa7102e3102b7e699acd8cff4d0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c49c88cf3882a48ba6b5a93de74df61a.png)
![](https://img.xkw.com/dksih/QBM/2013/8/19/1571317009309696/1571317014691840/STEM/ea95fb4ded51409dbd9648f01e29bbea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae58cd66daebc6dcfeaec8cd883f8573.png)
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