document.write( "Question 1131047: In a race with 10 horses, the first, second, and third place finishers are noted. How many
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Algebra.Com's Answer #747664 by ikleyn(52781)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "I interpret it in this way.\r
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document.write( "    Of 10 horses, A, B, C, D, E, F, G, H, I, J how many permutations do exist such that A, B and C are in their 1-st, 2-nd and 3-rd places ?\r\n" );
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document.write( "7! = 7*6*5*4*3*2*1.\r\n" );
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\n" ); document.write( "\n" ); document.write( "It is the number of permutations of 7 objects.\r
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\n" ); document.write( "\n" ); document.write( "3 objects of the given 10 objects are fixed on their 1-st, 2-nd and 3-rd winning places.
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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
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