Question: A student takes a 10 question multiple choice exam, where each question has 4 possible answers listed, one of which is correct. The student tosses

A student takes a 10 question multiple choice exam, where each question has 4 possible answers listed, one of which is correct. The student tosses two coins for each question: answers A if 2 heads, B if heads then tails, C if tails then heads, D if both tails. What is the probability the student gets:

a)Exactly 3 answers correct

b)0 correct answers

c)At most 4 correct answers

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