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1 . 一个盒子中有大小相同的4个红球3个白球,若从中任取3个小球,则在“抽取的3个球中至少有一红球”的前提下“抽取的3个球全是红球”的概率是_________ ;若用
表示抽取的三个球中白球的个数,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac87b4bd71432d757c7b78bbd6b2dcfd.png)
_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac87b4bd71432d757c7b78bbd6b2dcfd.png)
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2 . 我市周边接壤的省份如下图,用若干种颜色标注6个地图的区域,使得相邻区域颜色不同,则最少需要______ 种颜色,此时共有______ 种涂色方案.
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3 . 已知数列
的首项
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25960d3812de00a90f060950f4b48197.png)
______ ;满足
的最大整数
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc6545b8eca1c4223ed701a199a85683.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7643e8b7aa32ebf299048417a94432dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25960d3812de00a90f060950f4b48197.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b9587d657211fcc4d689e81ea186c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
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4 . 一质点在平面内每次只能向左或向右跳动1个单位,且第1次向左跳动.若前一次向左跳动,则后一次向左跳动的概率为
;若前一次向右跳动,则后一次向左跳动的概率为
.记第n次向左跳动的概率为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e948956b4ef1bb5fa3c09fbda213dee.png)
________ ;![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f11c04103c0e5416897894d9225637b2.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dac452fbb5ef6dd653e7fbbef639484.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ffb021aa7d5a5c2f0691e337caad624.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e948956b4ef1bb5fa3c09fbda213dee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f11c04103c0e5416897894d9225637b2.png)
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5 . 已知关于
的不等式
恒成立,
的最小值为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
___________ ,并求
的最小值为___________ (其中
为自然对数的底数)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01f4c6d71c421736c61a36801e11d6da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c57bbef89a37f1a3808c0ceeac0c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bbd815a77afa6bd88296afdf28c4ca3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/041a7c8fc017f596542c5e6ec7d1c40b.png)
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6 . 甲、乙两名运动员进行乒乓球比赛,规定每局比赛胜者得1分,负者得0分,比赛一直进行到一方比另一方多两分为止,多得两分的一方赢得比赛.已知每局比赛中,甲获胜的概率为
,乙获胜的概率为
,
,且每局比赛结果相互独立.
①若
,则甲运动员恰好在第4局比赛后赢得比赛的概率为____________ ;
②若比赛最多进行5局,则比赛结束时比赛局数
的期望
的最大值为____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92f92b7bb58207fc4cf8e6abb6f0fd5e.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c673f3acf403e7c300232d392e514261.png)
②若比赛最多进行5局,则比赛结束时比赛局数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bf3baba074e8aeb6f3ea117865bbd1b.png)
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7 . 设随机变量
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bbae883ac71d106ea17f6c9de1092a7.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/631429c4c924638d9f6688ecda1094fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72e21fb676122148ea985159a007358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bbae883ac71d106ea17f6c9de1092a7.png)
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7日内更新
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387次组卷
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4卷引用:河北省秦皇岛市卢龙县2023-2024学年高二下学期5月考试数学试题
8 . 若数列
是等差数列,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
________ ,数列
的前
项和![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fdab475bd7621455a812218353f0d12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07970da4aa6afeb451a124e93f3de607.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f7fda69e2b32b9ced2239f915fa59b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7f98d49a9c29141100627594f1b8a22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7978d7bd6f6caf9ac9837ffce5f89654.png)
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9 . 设随机变量
,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
_________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b060ce5275f54932abc24547f579c1af.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/949d821ae0182847678c7d7addfe9d36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f72e21fb676122148ea985159a007358.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df5be1440d099f464ef46dee39de6010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b060ce5275f54932abc24547f579c1af.png)
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10 . 已知函数
(
)存在两个极值点
,
,且
,则
的取值范围为______ ;
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd432117dabe0a4793ea96d28252ab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd5cdde751120c6deab563a6f7f8cf05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26d8dafc71b106f39f4e15442220897b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13e21ac584efecd770c2dd9d2e83803a.png)
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