document.write( "Question 696630: Which number completes this sequence? 123, 117, 108, 99, \n" ); document.write( "
Algebra.Com's Answer #429181 by Edwin McCravy(20056)\"\" \"About 
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document.write( "123,  117, 108, 99, ?, ?, ?, ?, ?, ?, ?, ?, ? \r\n" );
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document.write( "Start with 123: \r\n" );
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document.write( "123, find the sum of the digits 1+2+3=6, Subtract 123-6 = 117\r\n" );
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document.write( "117, find the sum of the digits 1+1+7=9, Subtract 117-9 = 108\r\n" );
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document.write( "108, find the sum of the digits 1+0+8=9, Subtract 108-9 = 99\r\n" );
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document.write( "99, find the sum of the digits 9+9=18, Subtract 99-18 = 81\r\n" );
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document.write( "81, find the sum of the digits 8+1=9, Subtract 81-9 = 72\r\n" );
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document.write( "72, find the sum of the digits 7+2=9, Subtract 72-9 = 63\r\n" );
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document.write( "63, find the sum of the digits 6+3=9, Subtract 63-9 = 54\r\n" );
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document.write( "54, find the sum of the digits 5+4=9, Subtract 54-9 = 45\r\n" );
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document.write( "45, find the sum of the digits 4+5=9, Subtract 45-9 = 36\r\n" );
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document.write( "36, find the sum of the digits 3+6=9, Subtract 36-9 = 27\r\n" );
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document.write( "27, find the sum of the digits 2+7=9, Subtract 27-9 = 18\r\n" );
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document.write( "18, find the sum of the digits 1+8=9, Subtract 18-9 =  9\r\n" );
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document.write( "9, find the sum of the digits 9, Subtract 9-9 =  0\r\n" );
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document.write( "Edwin
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