Question 1152862
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For each of 15 questions, the probability to guess randomly the correct answer is {{{1/4}}}.


The probability to answer incorrectly all 15 questions is  {{{(3/4)^15}}} = 0.013363


The probability to get at least 1 correct answer is the COMPLEMENT


    P = 1 - {{{(3/4)^15}}} = 1 - 0.013363 = 0.986637.    <U>ANSWER</U>
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