In a college mathematics class, all the students are also taking anthropology, history or psychology, and some of the students are taking two, or even all three, of these courses. If 40 students are taking anthropology, 11 students are taking history, 12 students are taking psychology, 3 students are taking all three courses, 6 students are taking anthropology and history and 6 students are taking psychology and anthropology. Be sure you are reading and/or mathematically. a) How many students are taking only anthropology? b) How many students are taking anthropology or history? c) How many students are taking history and anthropology but not psychology?

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