Find probability of guessing exactly four answers correctly

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Reference no: EM13154710

You are taking a multiple-choice quiz that consist of 7 questions. each questions has four possible answers, only one of which is correct. to complete the quiz, you randomly guess the answer to each question. find the probability of guessing

a)exactly four answers correctly.
b)at least four answers correctly.
c)less than four answers correctly.

Reference no: EM13154710

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