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A math course has 2 sections. Section one has 55 students of which 10 received an A. Section two has 45 students of which 11 received an A. If a student was chosen randomly from 100 students

(a) What is the probability that the student was in section one

(b) What is the probability that the student received an A.

(d)Given that the student received an A, find the probability that the student was chosen from Section one.

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