(a) For what values ofn (where n => 3) does the complete graph Kn have an Eulerian

tour? Justify your answer.

(b) For what values of n (where n => 3) does the complete graph Kn have a Hamiltonian

cycle? Justify your answer.

I have no idea what these questions mean. Are the questions referring to a particular graph that I should have or are they just general questions? Please help!