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January 7th, 2014, 05:17 AM  #1 
Member Joined: Dec 2011 Posts: 61 Thanks: 1  Counting problem The figure shows a network of roads from A to B. Ann goes from A to B either east or north at each junction. How many routes from A to B can Ann choose? 
January 7th, 2014, 06:09 AM  #2 
Member Joined: Dec 2011 Posts: 61 Thanks: 1  Re: Counting problem
Haha, I suddenly figured out it should be 7C4.

January 7th, 2014, 10:01 AM  #3 
Member Joined: Apr 2013 Posts: 65 Thanks: 0  Re: Counting problem
Indeed it should.


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