can anyone help me with this question....plz:

Determine the number ofn-vertex orientated labeled graphs without loops in which every two distinct vertices are connected by at most one (orientated) edge.

thanks

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- November 10th 2008, 01:44 AMdavidmccormickGraph theory
can anyone help me with this question....plz:

Determine the number of*n*-vertex orientated labeled graphs without loops in which every two distinct vertices are connected by at most one (orientated) edge.

thanks