document.write( "Question 1106668: How many ways can you choose 3 flowers from an arrangement of 5? \n" ); document.write( "
Algebra.Com's Answer #721661 by ikleyn(52781)\"\" \"About 
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document.write( "The number of ways to choose 3 things from the set of 5 things is  \r\n" );
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document.write( "\"C%5B5%5D%5E3\" = \"5%21%2F%283%21%2A%285-3%29%21%29\" = \"5%21%2F%283%21%2A2%21%29\" = \"%281%2A2%2A3%2A4%2A5%29%2F%28%281%2A2%2A3%29%2A%281%2A2%29%29\" = cancel 3! = 1*2*3 in both the numerator and denominator = \"%285%2A4%29%2F%281%2A2%29\" = \"20%2F2\" = 10.\r\n" );
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document.write( "In general case, the number of ways to choose \"m\" things from the set of \"n\" things (n > m) is \r\n" );
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document.write( "\"C%5Bn%5D%5Em\" = \"n%21%2F%28m%21%2A%28n-m%29%21%29\" = \"n%21%2F%28m%21%2A%28n-m%29%21%29\" =  \"%28n%2A%28n-1%29%2A%28n-2%29%2A+ellipsis%2A%28n-m%2B1%29%29%2F%281%2A2%2Aellipsis%2Am%29\".\r\n" );
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document.write( "It is called the \"number of combinations of n items taken m at a time\".\r\n" );
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\n" ); document.write( "On combinations, see the lessons\r
\n" ); document.write( "\n" ); document.write( "    - Introduction to Combinations\r
\n" ); document.write( "\n" ); document.write( "    - PROOF of the formula on the number of Combinations\r
\n" ); document.write( "\n" ); document.write( "    - Problems on Combinations\r
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\n" ); document.write( "\n" ); document.write( "    - OVERVIEW of lessons on Permutations and Combinations\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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