Graph Theory-2

• twice
  degree

• once
  degree

• zero
  degree

• None of these

The number of vertices of odd degree in a graph is always ______.

• zero

• odd

• even

• can't say

A graph, in which all the vertices are of equal degree, is called a ___________ graph.

A vertex which has only one\break incident edge on it is called a ________ vertex.

The degree of a pendant vertex is _____.

A simple graph in which there exists an edge between

every pair of vertices is called a _______ graph.

The total number of edges in a complete graph G with `n' vertices

is ______