document.write( "Question 1157603: There are six seat in a railway carriage. In how many different ways can 4 people occupy them?
\n" ); document.write( "My calculation : 6!x2!
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Algebra.Com's Answer #780477 by ikleyn(52803)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "Your answer is wrong.\r
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\n" ); document.write( "\n" ); document.write( "The correct answer is  6*5*4*3 = 360 ways,  the product of  4 consecutive integer numbers,
\n" ); document.write( "starting from  6  in descending order.         ANSWER\r
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\n" ); document.write( "\n" ); document.write( "The mantra is standard for all such problems:\r
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document.write( "    We can place item 1 in any of 6 positions;\r\n" );
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document.write( "                 item 2 in any of 5 remaining positions;\r\n" );
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document.write( "                 item 3 in any of 4 remaining positions;\r\n" );
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document.write( "                 item 4 in any of 3 remaining positions.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved, answered and explained.\r
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\n" ); document.write( "\n" ); document.write( "This problem is about PERMUTATIONS.\r
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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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