Which of the following cannot be represented as a tree?

2022

Which of the following cannot be represented as a tree?

  1. A.

    Unix directory without links

  2. B.

    Table of Contents of a book

  3. C.

    Customer calls in a call centre

  4. D.

    Arithmetic expression

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Show answer & explanation

Correct answer: C

A tree represents a hierarchical structure with a single root and parent–child relationships. Customer calls in a call centre are independent communication events and do not follow a hierarchical node structure. Hence, they cannot be represented as a tree.

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