1. show that every simple finite graph has two vertices of the same degree. 2.prove that the degree of a regular complete tripartite graph kr,s,t with n vertices is given by 2n/3. 3. Draw a picture of the graph weather if  it is a simple or not  G1=(V1,E1) V1=a,b,c,e} E1={ab,bc,ac,ad,de}

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