document.write( "Question 1172176: An unprepared student takes a 3-question true/false quiz in which he guesses the answers to all 3 questions. What is the probability he gets all 3 correct?\r
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Algebra.Com's Answer #797110 by math_tutor2020(3817)![]() ![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "The probability of getting the correct answer is 1/2 on any given question.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Each question is independent of any other, so we multiply out the fraction (1/2) with itself three times getting (1/2)*(1/2)*(1/2) = (1*1*1)/(2*2*2) = 1/8\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Use of a calculator shows \n" ); document.write( "1/8 = 0.125 \n" ); document.write( "This converts to 12.5% when moving the decimal point over to the right 2 spots.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "----------------------------------\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Answer as a fraction = 1/8 \n" ); document.write( "Answer as a decimal = 0.125 \n" ); document.write( "Answer as a percentage = 12.5% \n" ); document.write( "All values are exact \n" ); document.write( " \n" ); document.write( " |