document.write( "Question 1096086: how do i compute and show my work for 9C3 and 9P3
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Algebra.Com's Answer #710697 by ikleyn(52788)\"\" \"About 
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document.write( "9C3 = \"C%5B9%5D%5E3\" = \"9%21%2F%283%21%2A%289-3%29%21%29\" = \"9%21%2F%283%21%2A6%21%29\" = \"%289%2A8%2A7%29%2F%281%2A2%2A3%29\" = 3*4*7 = 84.\r\n" );
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document.write( "It is the number of combinations of 9 items taken 3 at a time.\r\n" );
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document.write( "9P3 = 9*8*7 = 504.\r\n" );
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document.write( "It is the number of PLACEMENTS of 9 items taken 3 at a time.\r\n" );
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\n" ); document.write( "On Combinations, see the lessons\r
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\n" ); document.write( "\n" ); document.write( "    - PROOF of the formula on the number of 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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