Question 315385
In a survey of 100 college students, 35 were registered in College Algebra, 52 were registered in History I, and 18 were registered in both courses. 
How many students were registered in College Algebra or History I?
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(A or H) = A + H - (A and H)
(A or H) = 35 + 52 - 18 
(A or H) = 69 
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Cheers,
Stan H.