A mail truck must deliver packages to 5 different homes (A, B, C, D, and E). The trip must start and end at A. The graph below shows the distances (in miles) between locations. We want to minimize the total distance traveled.
The nearest-neighbor tour starting with vertex A is given by:
A. A, E, C, D, B, A.
B. A, B, C, D, E, A.
C. A, C, D, B, E, A.
D. A, D, B, E, C, A.
E. none of these
Answer: C
Mathematics
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x
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Mathematics
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D. f-1(x) = 
Mathematics