College allow the 8th level students two exams (attempts) for the exit exam and consider the best mark. Suppose 30% of the students fail in the first exam (FE), 20% of students fail in the second exam (SE), and 10% of students fail on both exams (FE∩SE). If an 8th level student is randomly chosen, then what is the probability that this student (a) Fails at least one of the exam? (b) Only fails the first exam, but not the second exam? (c) Successfully passes both the exams?  d) Fails any of the exam?

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