liamklec1004 liamklec1004

05-09-2018
Mathematics

contestada

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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tiferon2 tiferon2

05-09-2018

28-M
28-P
13-M&P

one of two courses: 28+28=56

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