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在1,2,3三个数中任取两个,组成一个两位数,则组成的两位数是偶数的概率为( )...
在1,2,3三个数中任取两个,组成一个两位数,则组成的两位数是偶数的概率为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193857253665163/SYS201311011938572536651006_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193857253665163/SYS201311011938572536651006_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193857253665163/SYS201311011938572536651006_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131101193857253665163/SYS201311011938572536651006_ST/3.png)
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