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如图,一个小球从A点沿制定的轨道下落,在每个交叉口都有向左或向右两种机会均相等的...
如图,一个小球从A点沿制定的轨道下落,在每个交叉口都有向左或向右两种机会均相等的结果,那么,小球最终到达H点的概率是( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102205841476771/SYS201311031022058414767005_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102205841476771/SYS201311031022058414767005_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102205841476771/SYS201311031022058414767005_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102205841476771/SYS201311031022058414767005_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102205841476771/SYS201311031022058414767005_ST/3.png)
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