document.write( "Question 1190129: In how many ways can 4 different Math books, 5 different History books, and 2 different Filipino books be arranged on a shelf, if 2 Filipino books must be at the end of the shelf? \n" ); document.write( "
Algebra.Com's Answer #821757 by Boreal(15235)![]() ![]() You can put this solution on YOUR website! 2 ways to choose the first book (F)and therefore 1 way to choose the second. \n" ); document.write( "Of the other 9 books, the first has 9 possibilities, the second 8, ... Since all the math books are different and all the history books are different, may treat each of the 9 as unique. \n" ); document.write( "This is 2*9! \n" ); document.write( "=725760 ways. \n" ); document.write( " |