【单选题】【消耗次数：1】
袋中有5个球，编号分别为1,2,4,5，从中取出3个球，三球中最大编号为3的概率是
①
1/10
②
3/10
③
1/5
④
2/5
参考答案：
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相关题目
【单选题】
袋中有5个球（3新2旧），每次取1个，无放回的抽取2次，则第2次取到新球的概率为（）
①
<imgwidth="14"height="41"v:shapes="_x0000_i1215"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image315.png">
②
<imgwidth="16"height="41"v:shapes="_x0000_i1216"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image317.png">
③
<imgwidth="16"height="41"v:shapes="_x0000_i1217"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image319.png">
④
<imgwidth="21"height="41"v:shapes="_x0000_i1218"src="http://wljy.whut.edu.cn/uploadfiles/word/xxdsb06.files/image321.png">
【单选题】
三个箱子,第一箱中有4个黑球1个白球,第二箱中有3个黑球3个白球,第三个箱中有3个黑球5个白球,现随机取一个箱子,再从这个箱中取出一个球,则取到白球的概率是( ).
①
53/120
②
9/19
③
67/120
④
10/19
随机题目
【简答题】
测设的基本工作是、、。[填空(1)][填空(2)][填空(3)]
【简答题】
某建筑首层室内地面<img class="kfformula" src="data:image/png;base64,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" data-latex="\pm 0.000"/>的绝对高程为45.300m，室外地面设计高程为-1.500m，则室外地面的绝对高程为[填空(1)]m
【简答题】
测量学的内容包括[填空(1)]和[填空(2)]两部分。
【简答题】
何谓坐标正算和坐标反算？
【简答题】
坐标方位角