document.write( "Question 1177107: consider the sequence of numbers: 2;5;2;9;2;13;2;17\r
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Algebra.Com's Answer #805340 by mccravyedwin(407)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "2,5,2,9,2,13,2,17,...\r\n" );
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document.write( "The sum of the 50 odd numbered terms \r\n" );
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document.write( "2,_,2,_,2,_,2,_,...2\r\n" );
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document.write( "is 50*2 = 100  <--sum of odd numbered terms (all 2's)\r\n" );
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document.write( "The sum of the 50 even-numbered terms:\r\n" );
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document.write( "5,__,9,__,13,__,17,__,...\r\n" );
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document.write( "That's 50 terms of an arithmetic sequence with common difference 4:\r\n" );
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document.write( "\"S%5Bn%5D=expr%28n%2F2%29%282a%5B1%5D%2B%28n-1%29d%29\"\r\n" );
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document.write( "\"S%5B50%5D=expr%2850%2F2%29%282%2A5%2B%2850-1%294%29\"\r\n" );
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document.write( "\"S%5B50%5D=25%2810%2B%2849%294%29\"\r\n" );
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document.write( "\"s%5B50%5D=25%2810%2B196%29\"\r\n" );
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document.write( "\"s%5B50%5D=25%28206%29\"\r\n" );
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document.write( "\"s%5B50%5D=5150\"  <--sum of even-numbered terms.\r\n" );
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document.write( "------------------\r\n" );
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document.write( "Add them together = 100 + 5150 = 5250  <--answer\r\n" );
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document.write( "Edwin
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