Given an undirected graph with N vertices and M edges. In how many ways we can choose K vertices, such that after removing them, the graph remains still remains connected? I know we can find Articulation points when k=1, but not able to understand what to do for k>1.
1<= N <=50 , N-1<= M <=(N*(N-1)/2) and 0<= k <=N.
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UPD There was a mistake from my side. There was a typo in the question. I have corrected it now.