document.write( "Question 929889: I need to find the next number in the sequence but not sure how to get there\r
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\n" ); document.write( "\n" ); document.write( "13
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Algebra.Com's Answer #565101 by Edwin McCravy(20059)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "3, -6, 12, 4, 20\r\n" );
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document.write( "The odd terms go\r\n" );
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document.write( " 3, add 9, get 12, add 8, get 20\r\n" );
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document.write( "We added 9, then we added 8. which is 1 less than 9.\r\n" );
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document.write( "So we might guess that the even terms add 1 less each time, too\r\n" );
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document.write( "So the even terms go\r\n" );
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document.write( "-6, add 10, get 4, so we'd add 1 less or 9, and get 13.\r\n" );
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document.write( "So I'd pick 13, assuming that the even terms add 1 less each time\r\n" );
document.write( "like the odd terms do.  That's as logical as any other guess as to\r\n" );
document.write( "what they do.\r\n" );
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document.write( "Edwin
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