document.write( "Question 1184483: Find the number of ways that 9 persons can arrange themselves:
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\n" ); document.write( "\n" ); document.write( "c) in a row of 9 chairs. \n" ); document.write( "
Algebra.Com's Answer #815083 by ikleyn(52781)\"\" \"About 
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document.write( "a)  around a table where two of them sit beside each other;\r\n" );
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document.write( "       2*(9-2)! = 2*7! = 2*5040 = 10080.    ANSWER\r\n" );
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document.write( "b)  around a table (no restrictions);\r\n" );
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document.write( "        (9-1)! = 8! = 40320.      ANSWER\r\n" );
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document.write( "c)  in a row of 9 chairs.\r\n" );
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document.write( "       9! = 362880.      ANSWER\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
\n" ); document.write( "\n" ); document.write( "    - Simple and simplest problems on permutations\r
\n" ); document.write( "\n" ); document.write( "    - Persons sitting around a circular table \r
\n" ); document.write( "\n" ); document.write( "in this site.\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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