解题方法
1 . 若随机变量
,随机变量
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5686ef4a3220e0712eedff22da6a0ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bf69ead406c8f5ebe073dac5d93803b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49d83ba67de5a70123c918d5d0417a41.png)
A.0 | B.![]() | C.![]() | D.2 |
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解题方法
2 . 一玩具制造厂的某一配件由A、B、C三家配件制造厂提供,根据三家配件制造厂以往的制造记录分析得到数据:制造厂A、B、C的次品率分别为
,提供配件的份额分别为
,设三家制造厂的配件在玩具制造厂仓库均匀混合且不区别标记,从中随机抽取一件配件,则抽到的是次品的概率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbc21cbbfd7c77c3d4cd9b3cc716c6d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af3c512f650635497067a0e081a66428.png)
A.0.0135 | B.0.0115 | C.0.0125 | D.0.0145 |
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4卷引用:专题05 条件概率--高二期末考点大串讲(苏教版2019选择性必修第二册)
(已下线)专题05 条件概率--高二期末考点大串讲(苏教版2019选择性必修第二册)重庆市杨家坪中学2023-2024学年高二下学期第二次月考数学试题吉林省通化市梅河口市第五中学2023--2024学年高二下学期6月月考数学试题(已下线)【高二模块一】难度1 小题强化限时晋级练(基础1)
解题方法
3 . 书架上已有四本书,小明又带来了两本不同的长篇小说和一本人物传记要放到书架上,若两本小说不能放到一起,则不同的放法有( )
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 正方体
中,
,
分别在
上,且
,
,则下列正确的有( )个
①
,②
,③
,④点
到平面
距离为1
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf9b288c48c73463a2f214f02b6952a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564a9f661332d97d09e82dfd6f499d30.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0963c102bfc6da34a4e8c4e16d503065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac240e81e4dbf3097c843b75235ec661.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e89457e4eafe86d2c6f404f967c753.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/661df691bacf67f20557fef29c1af1eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6469878a955cc09fac22ba5aea3fb962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/028856d5101687dd8eaf130846489cfd.png)
A.1 | B.2 | C.3 | D.4 |
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5 . 若2名女生4名男生排成一排,则2名女生不相邻的排法有( )种.
A.120 | B.240 | C.360 | D.480 |
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6 . 已知等差数列
的前
项和为
,公差为
,且
单调递增,若
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08eb71ecf8d733b6932f4680874dbbf3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/846fa57d92d6ad44d6a0cafad1e71ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b83d73d014a0ca4aff4282228312f55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c02bc0c74292b1e8f395f90935d3174.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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7 . 若
,
,
,那么
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ab4c0f3e6ac348c8ab387c15e20d50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0369f74c467f3dccef974c444492c547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5237d25fdd7de73c956c6d3b4762fa07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ed6ed1283718f746105c18bd8b72c3b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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8 . 已知
,下列四个结论:①
,②
,③
,④
.其中错误的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1bb486cbf98ae341a35a17e79fae7d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b0e6eb011614deef2d50ceab01c8d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e0b26fa1a2c42bf24833e241ea25a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec504e75b5fe6435a94047a2f0b9443.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9dd82388f903f53c58ff6d655dd7d14.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
9 . 已知双曲线
:
的左,右焦点分别为
,
,过
的直线与双曲线
的右支交于
,
两点,且
,则
的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a0bd4bd9985f1e367c100b453ed03f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0907a673d52825cd7df84b400972d4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/47ff8a5886e42095da57422c8777c10d.png)
A.20 | B.22 | C.28 | D.36 |
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10 . 下列叙述中,是离散型随机变量的是( )
A.某电子元件的寿命 |
B.某人早晨在车站等出租车的时间 |
C.高速公路上某收费站在一小时内经过的车辆数 |
D.测量某零件的长度产生的测量误差 |
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