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In a multiple choice exam, there are 7 questions and 4 choices for each question (a,...

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Basic Math

In a multiple choice exam, there are 7 questions and 4 choicesfor each question (a, b, c, d). Nancy has not studied for the examat all and decides to randomly guess the answers. What is theprobability that: (please round all answers to four decimalplaces)

a) the first question she gets right is question number 3?

b) she gets all of the questions right?

c) she gets at least one question right?

Answer & Explanation Solved by verified expert
3.9 Ratings (604 Votes)
There are a total of n7 questions each of which has 4 optionsOut of these 4 options only one of them is correct Thus theprobability of guessing a question correctly is andsimilarly the probability    See Answer
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