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如图是一个算法的流程图,回答下面的问题:当输出的y的值为3时,输入的x为 .
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如图是一个算法的流程图,回答下面的问题:当输出的y的值为3时,输入的x为
.
考点分析:
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已知P(A)=
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,则P(
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)=
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圆x
2+y
2=1与直线y=kx+2没有公共点的充要条件是( )
A.
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B.
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C.
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D.
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2+(y-3)
2=1上一点,则线段AB的最小值是( )
A.4
B.5
C.
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在某项体育比赛中,七位裁判为一选手打出的分数如下:
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去掉一个最高分和一个最低分后,所剩数的平均值和方差分别为( )
A.92,2
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一个总体中共有10个个体,用简单随机抽样的方法从中抽取一个容量为3的样本,则某特定个体入样的概率是( )
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D.
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