If a graph has 5 vertices and 10 edges, what is the maximum number of edges it c

Practice Questions

Q1
If a graph has 5 vertices and 10 edges, what is the maximum number of edges it can have?
  1. 5
  2. 10
  3. 20
  4. 25

Questions & Step-by-Step Solutions

If a graph has 5 vertices and 10 edges, what is the maximum number of edges it can have?
  • Step 1: Understand what a vertex is. A vertex is a point in a graph where edges meet.
  • Step 2: Understand what an edge is. An edge is a line connecting two vertices.
  • Step 3: Identify how many vertices are in the graph. In this case, there are 5 vertices.
  • Step 4: Use the formula for the maximum number of edges in a simple undirected graph, which is V(V-1)/2, where V is the number of vertices.
  • Step 5: Substitute the number of vertices into the formula. Here, V = 5, so we calculate 5(5-1)/2.
  • Step 6: Calculate (5-1) which equals 4.
  • Step 7: Multiply 5 by 4 to get 20.
  • Step 8: Divide 20 by 2 to get 10.
  • Step 9: Conclude that the maximum number of edges in a graph with 5 vertices is 10.
  • Graph Theory – Understanding the properties of simple undirected graphs, including the relationship between vertices and edges.
  • Combinatorial Mathematics – Applying combinatorial formulas to determine the maximum number of edges in a graph based on the number of vertices.
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