The probability value become is 2c/(N-1).
According to the statement
we have given that If P and Q are both neighbors of R, and by considering unstructured network in which each node randomly chooses c neighbors.
we have to find that the probability of neighbors that they are also neighbors of each other.
So, For this purpose to find the probability is
Consider a network of N nodes unstructured and let
If each node chooses c neighbors at random,
then the probability that P will become by choose Q, or Q chooses P is roughly 2c/(N-1).
And the probability outcomes value become is 2c/(N-1).
So, The probability value become is 2c/(N-1).
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