9 Assume that 35 take mathematics, 28 take psychology, and 14 take mathematics and psychology. How many students take exactly one of these two courses? equation editorEquation Edito

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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9 Assume that 35 take mathematics, 28 take psychology, and 14 take mathematics and psychology.

How many students take exactly one of these two courses?
equation editorEquation Editor

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