The number of possible undirected graphs which may have self loops but no multiple edges and have n verticesis ________(a) 2^((n*(n-1))/2)(b) 2^((n*(n+1))/2)(c) 2^((n-1)*(n-1))/2)(d) 2^((n*n)/2)This interesting question is from Undirected Graph in portion Graph of Data Structures & Algorithms IThe question was posed to me in an internship interview.

The number of possible undirected graphs which may have self loops but

1.	The number of possible undirected graphs which may have self loops but no multiple edges and have n verticesis ________(a) 2^((n(n-1))/2)(b) 2^((n(n+1))/2)(c) 2^((n-1)(n-1))/2)(d) 2^((nn)/2)This interesting question is from Undirected Graph in portion Graph of Data Structures & Algorithms IThe question was posed to me in an internship interview.
Answer» Correct option is (d) 2^((Nn)/2) The EXPLANATION is: There can be at most, nn EDGES in an undirected graph.

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