document.write( "Question 1131047: In a race with 10 horses, the first, second, and third place finishers are noted. How many
\n" );
document.write( "outcomes are there? \n" );
document.write( "
Algebra.Com's Answer #747664 by ikleyn(52781)![]() ![]() You can put this solution on YOUR website! . \n" ); document.write( "The condition is formulated in a very dark way.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "I interpret it in this way.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); 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" ); document.write( "\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Solution\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "7! = 7*6*5*4*3*2*1.\r\n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "It is the number of permutations of 7 objects.\r \n" ); document.write( " \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. \n" ); document.write( "\r \n" ); document.write( "\n" ); document.write( "----------------\r \n" ); document.write( " \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( " - Problems on Permutations\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " - OVERVIEW of lessons on Permutations and Combinations\r \n" ); document.write( "\n" ); document.write( "in this site.\r \n" ); document.write( " \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 \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "The referred lessons are the part of this online textbook under the topic \"Combinatorics: Combinations and permutations\". \r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Save the link to this textbook together with its description\r \n" ); document.write( " \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 \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "into your archive and use when it is needed.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |