名校
解题方法
1 . 在区间
上随机取一个数m,使得直线
与圆
相交的概率是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61267f83b4052f67558aa83d5887f4c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
您最近一年使用:0次
名校
2 . 在区间
上随机取一个实数
,使得直线
与圆
相交的概率是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/455ba3d3e46977fcbe5b71f8bb9df4be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61267f83b4052f67558aa83d5887f4c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5f5d967ad135991b6075ee45df55643.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-02-13更新
|
167次组卷
|
2卷引用:重庆市沙坪坝区第八中学2018-2019学年高二下学期期中考试数学(理)试题
名校
3 . 圆形铜钱中间有一个边长为4毫米的正方形小孔,已知铜钱的直径为16毫米,现向该铜钱上随机地投入一粒米(米的大小忽略不计),那么该粒米落入小孔内的概率为
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2019-05-16更新
|
257次组卷
|
4卷引用:【全国百强校】重庆市巴蜀中学2018-2019学年高二下学期半期考试理科数学试题
名校
4 . 当
,则称点
为平面上单调格点:设![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e1bb1f9da3661bbe03e93eed05c3aa2.png)
(1)求从区域
中任取一点
,而该点落在区域
上的概率;
(2)求从区域
中的所有格点中任取一点
,而该点是区域
上的格点的概率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/207044cea93949b05bfdc2dbd60093e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8701e0cce437edc830438b4fe6277d89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e1bb1f9da3661bbe03e93eed05c3aa2.png)
(1)求从区域
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)求从区域
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
2017-12-10更新
|
815次组卷
|
3卷引用:重庆市第一中学2019-2020学年高二下学期期中数学试题
名校
5 . 如图所示,有两个独立的转盘(
)、(
).两个图中三个扇形区域的圆心角分别为
、
、
.用这两个转盘进行玩游戏,规则是:依次随机转动两个转盘再随机停下(指针固定不会动,当指针恰好落在分界线时,则这次结果无效,重新开始),记转盘(
)指针所对的数为
,转盘(
)指针所对的数为
,(
、
),求下列概率:
![](https://img.xkw.com/dksih/QBM/2017/11/20/1821443907403776/1824099861381120/STEM/2207079c7a994056b7946df29acd9a5e.png?resizew=255)
(1)
;
(2)
.
![](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/be6a6301878fed2a01413020b27310a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfe639eab78eafd2d40ea70aa5d3f21d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6017bcb854ffbaab4ad785055e03d4a.png)
![](https://img.xkw.com/dksih/QBM/2017/11/20/1821443907403776/1824099861381120/STEM/2207079c7a994056b7946df29acd9a5e.png?resizew=255)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b172d2f33821edc2fa00f63cbcb88435.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b776a0749c17979f22f7a0cbae40e7b.png)
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2017-11-25更新
|
371次组卷
|
2卷引用:人教A版2017-2018学年下学期高一期中考试仿真卷(B卷) 数学试题
名校
解题方法
6 . 设曲线
及直线
所围成的封闭图形为区域
,不等式组
所确定的区域为
,在区域
内随机取一点,则该点落在区域
内的概率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2b3194355bf3d24ddacb349da717e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2a7df955fc17e92fd86302f8c34664a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6cfe2756c3e63392f1ffee235fdab73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2017-05-27更新
|
232次组卷
|
2卷引用:重庆市重庆一中2016-2017学年高二下学期期中考试数学(理科) 试卷
7 . 在
内任取一个
,使得
的概率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e87cc1e6f5f6398c75fd42d0eabc749.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3d1a34ae2b8c77f8d7e355c6d1d667e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d73c50b9986e9dc4aaa95da197aa1f2.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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