Exer. 2324: Shown in each figure is a street map and a
Chapter 10, Problem 23(choose chapter or problem)
Exer. 2324: Shown in each figure is a street map and a possible path from point A to point B. How many possible paths are there from A to B if moves are restricted to the right or up? (Hint: If R denotes a move one unit right and U denotes a move one unit up, then the path in Exercise 23 can be specified by R U U R R R U R.)
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