Of the 50 students in a college , 32 are enrolled in psychology class and 37 are enrolled in logic. If 6 of the students did not enroll in either class, how many of the students are in only one of these two classes?

Of the 50 students in a college , 32 are enrolled in psychology class and 37 are enrolled in logic. If 6 of the students did not enroll in either class, how many of the students are in only one of these two classes? Correct Answer 21

Students who enrolled in atleast one of the classes = 50 - 6 = 44 Students who enrolled in both of the classes = 32 + 37 - 44 = 25 Students who enrolled only in psychology = 32 - 25 = 7 Students who enrolled only in logic = 37 - 25 = 12 Total number of students who enrolled only in one class = 7 + 12 =  19
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