Found this quiz which was posted by WRAL-TV in Raleigh, NC. Relatively easy for most of us. Did find an error which I e-mailed off to them, as they don't even list the correct state in their multiple choice answers for which is the one with the most lighthouses! (Their answer, by the way, is Maine).
http://www.wral.com/entertainment/quizzes/quiz/4414295/?show_quiz=1

Roland Babineau
The only true Harbour Lights dealer left in the world and the ONLY retailer in the world authorized to sell Harry Hine's lighthouse collectible line!
http://www.thecapecodstore.com/harbor_lights.html