A Note About Sets And Counting There are many files and videos. You need to read and view all of them! Practically every homework problem assigned to you is developed at least in part somewhere in these readings. Some of your homework problems require you to extend or combine concepts beyond the reading. There hasn’t been a new or unique word written about sets in two hundred years. Use your textbook to expand your example base. You will find similar examples in any standard textbook about sets and counting!