问:是否存在这样的正整数数列
,满足
,且对每个
,均有
或
;而其各项
的值恰构成
的一个排列?证明你的结论.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1374530d21cd2c874a3d2971e2617ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07c12c1d40b320b8e846c5a51c0d996f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92f5c95fbe4fe82e61f9a835d4c4498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5453184e251cfe787b5965cd38426962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf76837b97dbfae3e47539039f1e1188.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a81cedf519867f53009324131bfa9e7.png)
2013高三·江西·竞赛 查看更多[1]
(已下线)2013年全国高中数学联赛江西赛区预赛试题
更新时间:2018-12-14 22:18:37
|
【知识点】 圆排列和项链排列
相似题推荐
解答题-问答题
|
较难
(0.4)
【推荐1】在圆周上依次有
个点
,今随机地选取其中
个点为顶点作凸
边形
,已知选取与否的可能性是相同的,试求对每个
,
边形的两个相邻顶点
(规定
)之间至少有
中的
个点的概率,其中,
是给定的一组正整数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73eb3926f6daed59df80e7914c28b768.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f86ff702f60daaf4aff31db11ed98939.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58c01a2ab8267152b0c3e6e53efe2903.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24220f7001c1fa17f4449a2762fe748d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4de6bcd1060b575b8a77ad33f96738c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6acb05137c136ad72f1f11851bc7f413.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e5c11902ea84677a5981738f096869c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/591ee536bb3d90a3121946520ec34539.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】设
,
为所有满足下列条件的整数数列
的个数:
(1)
,
,且
;
(2)不存在
、
,使得
.
试求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d5ec9ad92f37e64eccce922ab1b14e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fcec7af3520884b173b29bda6c657a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7292f07bab993fe93606bf75ac6cc335.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c8d0474f7d81ef8dbefaacfd5afe7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9260f8989cfd0ffca5a49ffbc0668f14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19e09fc347453c501114ea6559344199.png)
(2)不存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c05b9832b09731a574d4a4adf7448de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bd79074a5097faa94df302a78cca862.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74e589f242e7e11c44bbbe5e3c65b9f7.png)
试求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19e3144db5cf92d41c4197dad70c5039.png)
您最近一年使用:0次