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Saturday, March 14, 2026

How many back edges?

When performing a depth-first search (DFS) on the following undirected graph with \(14\) vertices and \(32\) edges, how many back edges are obtained?

    A. \(17\)

    B. \(18\)

    C. \(19\)

    D. \(20\)

    E. None of the above

Original idea by: Pedro Ferreira 

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