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已知P（X＞x1）＝0.5，P（X≤x2）＝0.6，则x1（）x2。
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以下能够正确计算n!的程序是( )。A．Private Sub Commandl_C1ick()B．hiVate Sub Commandl_C1ick() n＝5:x＝1 n＝5:x=1:i＝1 DO DO X＝x*1 X＝X*1 i＝i＋1 i＝i＋1 Loop while i＜n Loop While＜n Print x Ptinte x End Sub End SubC．Private Sub Commandl_Click ()D．Pdvate Sub Commandl C1ick() n＝5:X＝1:i＝1 n＝5＝:x＝1:i＝1 DO DO X＝X*1 X＝X*1 i＝i＋1 i＝i＋1 Loop While i＞n Print x Print x End Sub End Sub
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（ 35 ）在窗体中添加一个名称为 Command1 的命令按钮，然后编写如下程序：Public x As IntegerPrivate Sub Command1_Click( )x = 10Call s1Call s2MsgBox xEnd SubPrivate Sub s1( )x = x + 20End SubPrivate Sub s2( )Dim x As Integerx = x + 20End Sub窗体打开运行后，单击命令按钮，则消息框的输出结果为A ） 10B ） 30C ） 40D ） 50
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已知二维随机变量（X，Y）服从区域[0，1]×[0，1]上的均匀分布，则（ ）。A.P{X＞0.5}=0.25
B.P{Y＞0.5}=0.25
C.P{max（X，Y）＞0.5}=0.25
D.P{min（X，Y）＞0.5}=0.25
考题
填空题已知P（X＞x1）＝0.5，P（X≤x2）＝0.6，则x1（）x2。
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