document.write( "Question 949060: a student is asked to answer 9 out of 12 questions on an exam.In how many ways can she select the questions to be answered
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Algebra.Com's Answer #579327 by amarjeeth123(569) $\"\"$ $\"About$

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No of ways=12!/(9!*3!)=(12*11*10)/(1*2*3)=220 ways
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