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So I'm having this assignment in probability regarding conditional probability that states the following:
Each of 25 exams papers has 2 questions written on it. Neither of the 50 questions repeats itself. The student knows the answer for 44 questions. In order for the student to pass the exam he must answer correctly either on the two questions for the paper he has chosen or on one question on the first paper he has chosen and on the first question on the second paper he has chosen.
What is the probability that the student will pass the exam?
Any sort of help will be appreciated.
Thank you in advance!