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Last year 500 students enrolled in both math and art class. Of these students 82 got an A in math, 73 in art class, and

Last year 500 students enrolled in both math and art class. Of these students 82 got an A in math, 73 in art class, and 42 in both statistic and psychology.Find the probability that randomly selected student got an A in math or art class (or both).

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