若从集合
中随机取一个数
,从集合
中随机取一个数
,则直线
不经过第四象限的概率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2837f16c570e920ed599925435dbc6d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f32149a067a8acdf8163ae26b5de0e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58731fdb875489abcb31d1f17b622d85.png)
A.![]() | B.![]() | C.![]() | D.![]() |
更新时间:2020-08-16 22:39:10
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【知识点】 计算古典概型问题的概率
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