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A tree has 10 vertices. How many edges does it have?

Sagot :

Question:

A tree has 10 vertices. How many edges does it have?

Answer:

30 edges

Example:

How many edges are there in a graph with 10 vertices, each of degree 6? Solution: The sum of the degrees of the vertices is 610 = 60. According to the Handshaking Theorem, it follows that 2e = 60, so there are 30 edges.

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