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Assume that 28 take mathematics, 28 take psychology, and 13 take mathematics and psychology. How many students take exactly one of these two courses
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Assume that 28 take mathematics, 28 take psychology, and 13 take mathematics and psychology. How many students take exactly one of these two courses

User Enyra
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3 votes
28-M
28-P
13-M&P

one of two courses: 28+28=56
User Steven Rosato
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