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Graph theory
  • 1. Graph theory is a branch of mathematics that deals with the study of graphs, which are mathematical structures used to model relationships between objects. A graph consists of a set of vertices, or nodes, which are connected by edges, or links. Graph theory has applications in various fields such as computer science, social network analysis, and operational research. It helps in solving problems related to connectivity, routing, optimization, and more. Overall, graph theory provides a powerful framework for analyzing and understanding complex systems and relationships.

    What is a graph in graph theory?
A) A pie chart
B) A mathematical structure consisting of vertices and edges
C) A chart or diagram
D) A line graph
  • 2. What is a vertex in a graph?
A) A function in graph theory
B) A line connecting two points in a graph
C) A point or node in a graph
D) A path between two vertices
  • 3. What is an edge in a graph?
A) A vertex with no connections
B) A connection between two vertices
C) A node's color in a graph
D) A loop on a vertex
  • 4. What is a planar graph?
A) A graph that can be drawn on a plane without any edge intersections
B) A disconnected graph
C) A multigraph
D) A graph with cycles
  • 5. What is the degree of a vertex in a graph?
A) The number of vertices in the graph
B) The size of the graph
C) The distance from one vertex to another
D) The number of edges incident to the vertex
  • 6. What is an isomorphism between two graphs?
A) A loop on a vertex in both graphs
B) Two disconnected graphs
C) A bijection between their vertex sets that preserves edges
D) The same number of vertices in both graphs
  • 7. What is a path in graph theory?
A) A sequence of edges that connect a sequence of vertices
B) A cycle in a graph
C) An isolated vertex
D) A disconnected graph
  • 8. In a simple graph, can an edge connect a vertex to itself?
A) Yes
B) Depends on the number of vertices
C) No
D) Sometimes
  • 9. What is a weighted graph?
A) A graph with maximum number of edges
B) An undirected graph
C) A graph in which a number (weight) is assigned to each edge
D) A graph with only one vertex
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