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Linear Graph

Which of the ...

Question

Which of the following statement is not true regarding graph?

A

A graph consists of a set of nodes and a set of arcs

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B

A graph is a tree

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C

A tree is a graph

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D

Graphs can be directed

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Solution

The correct option is C A tree is a graph
In mathematics, in graph theory, a tree is an undirected graph in which any two vertices are connected by exactly one path. Every acyclic connected graph is a tree. A forest is a disjoint union of trees, or equivalently an acyclic graph that is not necessarily connected.

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