document.write( "Question 536638: A student is asked to answer 9 out of 13 questions on an exam.
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document.write( "(a) Classify the problem as a permutation, a combination, or neither.\r
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document.write( "(a)permutation
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document.write( "(b)combination
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document.write( "(c)neither\r
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document.write( "(b) In how many ways can she select the questions to be answered?
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Algebra.Com's Answer #352488 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! a) This is a combination since the order does not matter.\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "b) There are 13 C 9 = (13!)/(9!(13-9)!) = 715 different ways\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "If you need more help, email me at jim_thompson5910@hotmail.com\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Also, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Thank you\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Jim \n" ); document.write( " |