I uploaded pictures on http://www.physicsforums.com/showthread.php?t=765106
I was looking at the answers in my textbook. They seem to make incongruent choices of solvents.
In e) and j), why choose EtOH and H2O/CH3OH? I would rather choose an aprotic solvent like DMF to better allow Sn2 to occur. Especially with j), there is a lot of competition with E2 because OH- is a strong base and because we are attacking a secondary carbon.
I see this again in k). Secondary carbon attacked: why not add DMF to prevent E2 and get best yield?