The number of edges in a complete bipartite graph 𝐾𝑚,𝑛K m,n is:A. 𝑚+𝑛m+nB. 𝑚𝑛mnC. 𝑚+𝑛−1m+n−1D. 𝑚𝑛−1mn−1
Question
The number of edges in a complete bipartite graph is:
A.
B.
C.
D.
Solution
A complete bipartite graph 𝐾𝑚,𝑛 is a graph whose vertices can be divided into two disjoint sets of m and n vertices such that every vertex in the first set is connected to every vertex in the second set.
The number of edges in a complete bipartite graph 𝐾𝑚,𝑛 is given by the product of the number of vertices in each set. This is because each vertex in one set is connected to every vertex in the other set.
So, the number of edges in a complete bipartite graph 𝐾𝑚,𝑛 is 𝑚𝑛 (option B).
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