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OpenStudy (angel123):
A multiple-choice quiz has 10 questions. Each question has five possible answers. Carman is certain that she knows the correct answer for Questions 1 and 4. If she guesses on the other questions, determine the probability that she gets 60% on the quiz.
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OpenStudy (fellowroot):
Here is my attempt. She already has 40% and only needs 20% to get the 60%. This means that she needs to get 2 right out of 6. So 2/6 or 1/3. Or it might be 1/5 times 1/5 which is 4%. I'm not sure.
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