(And more about the library) More realistically, some disciplines use materials in more differing forms than others. Let's look at just a few disciplines. The Dance holdings are in videotape, DVD, current journals, bound journals, and books. The Math holdings are in books, current journals, databases, bound journals, videotapes, and microfilm. The Computer Science holdings are in books, databases, and DVDs. Ancient Studies holdings are just bound journals, videotapes, microfilm, and microfiche. How many possible ways are there to fill in a line on the form for these four disciplines?