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An Unprepared Student Must Take a 7-Question, Multiple-Choice Test That

Question 45

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An unprepared student must take a 7-question, multiple-choice test that has 5 possible answers per question. If the student can eliminate two of the possible answers on the first three questions, and if she guesses on every question, what is the probability that she will answer at least one question correctly? ​


A) Pr(at least 1 correct) = An unprepared student must take a 7-question, multiple-choice test that has 5 possible answers per question. If the student can eliminate two of the possible answers on the first three questions, and if she guesses on every question, what is the probability that she will answer at least one question correctly? ​ A) Pr(at least 1 correct) = B) Pr(at least 1 correct) = C) Pr(at least 1 correct) = D) Pr(at least 1 correct) = E) Pr(at least 1 correct) =
B) Pr(at least 1 correct) = An unprepared student must take a 7-question, multiple-choice test that has 5 possible answers per question. If the student can eliminate two of the possible answers on the first three questions, and if she guesses on every question, what is the probability that she will answer at least one question correctly? ​ A) Pr(at least 1 correct) = B) Pr(at least 1 correct) = C) Pr(at least 1 correct) = D) Pr(at least 1 correct) = E) Pr(at least 1 correct) =
C) Pr(at least 1 correct) = An unprepared student must take a 7-question, multiple-choice test that has 5 possible answers per question. If the student can eliminate two of the possible answers on the first three questions, and if she guesses on every question, what is the probability that she will answer at least one question correctly? ​ A) Pr(at least 1 correct) = B) Pr(at least 1 correct) = C) Pr(at least 1 correct) = D) Pr(at least 1 correct) = E) Pr(at least 1 correct) =
D) Pr(at least 1 correct) = An unprepared student must take a 7-question, multiple-choice test that has 5 possible answers per question. If the student can eliminate two of the possible answers on the first three questions, and if she guesses on every question, what is the probability that she will answer at least one question correctly? ​ A) Pr(at least 1 correct) = B) Pr(at least 1 correct) = C) Pr(at least 1 correct) = D) Pr(at least 1 correct) = E) Pr(at least 1 correct) =
E) Pr(at least 1 correct) = An unprepared student must take a 7-question, multiple-choice test that has 5 possible answers per question. If the student can eliminate two of the possible answers on the first three questions, and if she guesses on every question, what is the probability that she will answer at least one question correctly? ​ A) Pr(at least 1 correct) = B) Pr(at least 1 correct) = C) Pr(at least 1 correct) = D) Pr(at least 1 correct) = E) Pr(at least 1 correct) =

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