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[Problem Solving]

试题详情

题目:

The figure above represents a system of roads along which traffic flows in the direction indicated by the arrows.  If the traffic were to split evenly at each fork of the road system, what percent of the traffic entering fork C would exit at Y?

选项:

A、87.5%
B、75%
C、62.5%
D、50%
E、12.5%

答案:

A

提问:

图看得我头晕,难道要一条一条路线算出概率然后再加起来吗,这样的话好麻烦而且要算很久啊,肯定有简单的算法,求老师解答!

解答:

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阅读1216
解答: sysadmin

提问:

图看得我头晕,难道要一条一条路线算出概率然后再加起来吗,这样的话好麻烦而且要算很久啊,肯定有简单的算法,求老师解答!

解答:

点赞0
阅读1217
解答: sysadmin老师

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