Page Turner loves discrete mathematics. She has 4 "graph theory" books, 8 books about combinatorics, and 8 "set theory" books. How many ways can she place her discrete mathematics books on the same shelf in a row if: a) there are no restrictions. 2.4329E+18 b) graph theory books are next to each other but the others could be anywhere on the shelf. 8.5365E+15 c) books are organized by their topic (same kinds are next to each other).

Q: REWRITE

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