document.write( "Question 1091469: Find the sum of the series 101+99+97+....+47.
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Algebra.Com's Answer #705872 by ikleyn(52790) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "This sequence is an arithmetic progression with the first term 101, the common difference -2 and the last term 47.\r\n" );
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document.write( "The number of terms is  = 28\r\n" );
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document.write( "    (in one more than the number of intervals of the length 2 between 101 and 47).\r\n" );
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document.write( "Now you can apply the formula for the sum of n terms of an AP:\r\n" );
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document.write( " =  =  =  = 2072.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Solved.\r
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\n" ); document.write( "\n" ); document.write( "On arithmetic progressions see the lessons in this site:\r
\n" ); document.write( "\n" ); document.write( "    - Arithmetic progressions\r
\n" ); document.write( "\n" ); document.write( "    - The proofs of the formulas for arithmetic progressions \r
\n" ); document.write( "\n" ); document.write( "    - Problems on arithmetic progressions \r
\n" ); document.write( "\n" ); document.write( "    - Word problems on arithmetic progressions\r
\n" ); document.write( "\n" ); document.write( "    - Mathematical induction and arithmetic progressions\r
\n" ); document.write( "\n" ); document.write( "    - One characteristic property of arithmetic progressions\r
\n" ); document.write( "\n" ); document.write( "    - Solved problems on arithmetic progressions \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 \"Arithmetic progressions\".\r
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