Which of the following cannot be represented as a tree?
2022
Which of the following cannot be represented as a tree?
- A.
Unix directory without links
- B.
Table of Contents of a book
- C.
Customer calls in a call centre
- D.
Arithmetic expression
Attempted by 1147 students.
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.

