document.write( "Question 1136143: In how many ways can four couples be seated in a row of eight seats at a theater if each couple is seated together?\r
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Algebra.Com's Answer #753936 by ikleyn(52776)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "ANSWER.  \"4%21+%2A+2%5E4\" = 1*2*3*4*16 = 384.\r\n" );
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document.write( "4! accounts for permutations of four couples considering each couple as one whole entity.\r\n" );
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document.write( "\"2%5E4\" accounts for permutations inside each couple.\r\n" );
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\n" ); document.write( "\n" ); document.write( "On Permutations,  see introductory lessons \r
\n" ); document.write( "\n" ); document.write( "    - Introduction to Permutations\r
\n" ); document.write( "\n" ); document.write( "    - PROOF of the formula on the number of Permutations\r
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\n" ); document.write( "\n" ); document.write( "    - OVERVIEW of lessons on Permutations and Combinations\r
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\n" ); document.write( "\n" ); document.write( "Also,  you have this free of charge online textbook in ALGEBRA-II in this site\r
\n" ); document.write( "\n" ); document.write( "    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.\r
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\n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic  \"Combinatorics: Combinations and permutations\". \r
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\n" ); document.write( "\n" ); document.write( "Save the link to this textbook together with its description\r
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\n" ); document.write( "\n" ); document.write( "Free of charge online textbook in ALGEBRA-II
\n" ); document.write( "https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson\r
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\n" ); document.write( "\n" ); document.write( "into your archive and use when it is needed.\r
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