A student is taking a multiple-choice test in which each question has four possible answers. She knows the answers to 5 of the questions, can narrow the choices to 2 in 3 cases, and does not know anything about 2 of the questions. What is the probability that she will correctly answer
A) 10,
b) 9,
c) 8
d) 7,
e) 6, and
f) 5 questions?
Do not need to answer every part if they are worked the EXACT same way.