1314.2: Four Students, Four Courses
Registration over the past two weeks reminded me of an interesting group of first-year advisees I once had: Barbara, Celarent, Darius, and Ferio. Among them, four courses were popular: Biology 101, Chemistry 120, Physics 101, and Sociology 101. Each student took two of those courses, but no two of those students had the same two courses and no course was taken by all four students. Indeed, only one of the four courses was taken by three of the students. No one took both chemistry and physics. Barbara didn’t take biology. Celarent took physics and had one course with Ferio, but didn’t take a course with Darius. Barbara, Darius, and Ferio did not all have a course together, but Celarent and Darius each took a course with Barbara.
Which two courses (of the four) did each student take?
Solutions to Puzzle #1314.2: Four Students, Four Courses, with a brief statement of your reasoning, may be sent to firstname.lastname@example.org, or, via campus mail, to Russell Marcus, Philosophy Department. Bald solutions do not merit prizes; you must explain your reasoning. Make sure to include your contact information, including class year, with your solution. A winner will be chosen among those who submit satisfactory solutions. Any one may play the puzzle, but only current Hamilton College students may win prizes.
Prize winners receive a t-shirt or mug from Lulasail, home of the best philosophy t-shirts on the web.
The Deadline for Puzzle #1314.2: Four Students Four Courses is Monday, December 2, 2013, at 4pm. (That’s right, you can work on it over break!) All entries must be received by that time.