Q11. Let T be a spanning tree of graph G. Suppose the spanning tree T has 13 edges. How many vertices must there be in the graph G? Your Answer: Answer

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**Question 11:** Let \( T \) be a spanning tree of graph \( G \). Suppose the spanning tree \( T \) has 13 edges. How many vertices must there be in the graph \( G \)?

**Your Answer:**
[Text Box for Input]

**Answer:**

In a spanning tree, the number of edges is always one less than the number of vertices. Therefore, if the spanning tree \( T \) has 13 edges, the number of vertices in \( G \) must be:

\[ V = E + 1 = 13 + 1 = 14 \]

So, the graph \( G \) must have 14 vertices.
Transcribed Image Text:**Question 11:** Let \( T \) be a spanning tree of graph \( G \). Suppose the spanning tree \( T \) has 13 edges. How many vertices must there be in the graph \( G \)? **Your Answer:** [Text Box for Input] **Answer:** In a spanning tree, the number of edges is always one less than the number of vertices. Therefore, if the spanning tree \( T \) has 13 edges, the number of vertices in \( G \) must be: \[ V = E + 1 = 13 + 1 = 14 \] So, the graph \( G \) must have 14 vertices.
**Q12B. Assess whether the statement is true or false:**

The graph shown is a tree.

**Diagram Explanation:**

The diagram is a graph with the following vertices labeled: a, b, c, d, e, f, and g. These vertices are connected by edges, forming a complex structure with multiple connections and cycles. 

- Vertex a connects to vertices b, f, and g.
- Vertex b connects to vertices a, c, and f.
- Vertex c connects to vertices b, d, and f.
- Vertex d connects to vertices c and e.
- Vertex e connects to vertex d.
- Vertex f connects to vertices a, b, c, and g.
- Vertex g connects to vertices a and f.

This graph contains cycles, which are sequences of edges and vertices wherein a vertex is reachable from itself. 

**Question:**

☐ True  
☐ False

In determining whether the graph is a tree, consider that a tree is an acyclic connected graph with exactly one path connecting any two vertices. In this case, the presence of cycles indicates the graph is not a tree.
Transcribed Image Text:**Q12B. Assess whether the statement is true or false:** The graph shown is a tree. **Diagram Explanation:** The diagram is a graph with the following vertices labeled: a, b, c, d, e, f, and g. These vertices are connected by edges, forming a complex structure with multiple connections and cycles. - Vertex a connects to vertices b, f, and g. - Vertex b connects to vertices a, c, and f. - Vertex c connects to vertices b, d, and f. - Vertex d connects to vertices c and e. - Vertex e connects to vertex d. - Vertex f connects to vertices a, b, c, and g. - Vertex g connects to vertices a and f. This graph contains cycles, which are sequences of edges and vertices wherein a vertex is reachable from itself. **Question:** ☐ True ☐ False In determining whether the graph is a tree, consider that a tree is an acyclic connected graph with exactly one path connecting any two vertices. In this case, the presence of cycles indicates the graph is not a tree.
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