1 . 某个会议有若干人(至少3人)参加,现要将这些人分组.分组前,每个人都选择两个人.若被选择的两个人同组.则选择他们的人不能在这组中.求最小的正整数
,使无论有多少人参加,且无论每人如何选择,都可以将他们按要求分成
组.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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2 . 设
是整数.对每个正整数
,令
为
在
进制表示下的非零数字的个数.证明:对于任意给定的正整数
和
,存在正整数
使得
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/731bdc8d2686a05f12a2ba8a7e3b01be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d1748a0e5fba63eac995e4388bb537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5809edaae5fd443ff3126d8ad0eaa1b5.png)
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3 . 已知数列
满足:
,
,
.求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61f75723824158fae6941098197f51b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7d996de3c21f0fbec3750b1985fc6c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b871ed324a95d6c6daf03fda30feb9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d39d6aa1813347686313bc667026d52.png)
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4 . 求最小的正整数
,使得当正整数点
时,在前
个正整数构成的集合
中,对任意
总存在另一个数
且
,满足
为平方数.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d2ba3c51d2726df8cee0918b8af2d32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcc6a0568db5a3fc7aca3366e608cf69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acfc595518cf752e1c7903dfff93dbda.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7580ce638933a1c81da5e2e1b656c77a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7741c8d8f0486556a102d904fb26a7be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b88584cf1df43e28d03592c7998b1653.png)
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5 . 求正整数n的最大值,使得对任意一个以
为顶点的n阶简单图,总能找到集合
的n个子集
,满足:
当且仅当
与
相邻.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07bcd047595eb49ca5978ee91b3c33aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e8c80883caf31045f1aa796c679a0c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252bab154aa5bdc9b4bce4c0d43aaf73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da8bec0aeeab406ccb815a85cce9d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0539fe8b83a5427649b7a52216112cb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f323258ad650bbd6228f50643c8457cd.png)
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6 . 已知在正整数n的各位数字中,共含有
个1,
个2,⋯,
个n.证明:
并确定使等号成立的条件.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d04a8b7a7595251251b8e0b7e665e8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5453ec6a9e8b96357c888ea863ddcf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/649fad26925be63140de835a44b78ed3.png)
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2018-12-07更新
|
370次组卷
|
3卷引用:2016年全国高中数学联赛山西赛区预赛试题
7 . 设
为实数,
.证明:
(1)把
写成无穷乘积有唯一的表达式
其中,
为正整数,满足
;
(2)
是有理数,当且仅当它的无穷乘积具有下列性质:存在
,对所有的
,满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/948eb26dc27646285335664baad48ec0.png)
(1)把
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/947ce9ff5b37676e23feab8cbc331c8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/697e84689167caa36ac89184035aab56.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6d2fa14ee14c2b79da6dbc875b61b8e.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef594556457f4989f78e8ad1038ff4ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f1d645832a371aaaf1a2720517f073f.png)
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8 . 求证:存在唯一的正整数数列
,使得
,
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ddd6fc72d06ab0baec942bb06269263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae831fee3e65238c0a1da5cb11ddca86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c859ed3085d0b8b22eb7c09bf61d1c70.png)
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9 . 数列
满足:
,
.求证:对一切
,均有
.其中
表示不大于实数
的最大整数,
是斐波那契数列:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e976c0663fa749ca749f99842d21ca03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2251dc81292a17b6e6bf8a4beefd06af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16c2284175c8b8d3c2d4e8f452a4ced8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29d5ec9ad92f37e64eccce922ab1b14e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c66c64695c4f015594ba909714a64c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/763b41172fa5f9f9ef85ab59df78bc39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a021cfd36426ae4957e32f0ee9c0a458.png)
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