Solution Sheet 1 is Posted

I have posted the solutions for the first problem sheet.

Update (2/15/15): I have posted a very slightly updated version of the solutions. I made two small changes: (1) most importantly, I added a note at the end of the relevant problem part to indicate explicitly that the diameter calculation for ER graphs is on the LCC (nodes on different network components have infinite distance between them); and (2) I replaced one "n" that should be "N" because I am using capital N for the number of nodes.