Assignment:
Mary is taking two courses, photography and economics. Student records indicate that the probability of passing photography is 0.75, that of failing economics is 0.65, and that of passing at least on of the two courses is 0.85. Find the probability of the following: a.Mary will pass economics. b. Mary will pass both courses. c. Mary will fail both courses. d. Mary will pass exactly one course.
Provide complete and step by step solution for the question and show calculations and use formulas.