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OpenStudy (anonymous):
A multiple choice test has 12 questions each of which has 5 possible answers, only one of which is correct. If Judy, who forgot to study for the test, guesses on all questions, what is the probability that she will answer exactly 3 questions correctly?
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OpenStudy (amistre64):
any ideas on how to approach it?
OpenStudy (confluxepic):
Put them into fractions. It will make it a lot easier.
OpenStudy (anonymous):
please help I have no idea
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