Sec. 7, 4.5-4.6, and 5.1 Due January 30

The first two sections seemed relatively similar to what has been covered in earlier chapters.  It was simply taking properties that we applied to statements P and Q and then having them apply in the case of sets.  5.1 seems easy enough.  You just find one example that disproves the given result and you're finished.  The only difficulty I foresee having is finding out what example to choose.  It seems as if it could be fairly time consuming simply guessing and then checking.