document.write( "Question 881065: a number 1 to 9 digits it can be eg 1+2-34etc and the numbers should not be repeated but the answer should be =100\r
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Algebra.Com's Answer #532257 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "The first 7 counting numbers 1,2,3,4,5,6,7 \r\n" );
document.write( "average to their middle number 4, so they add to 7×4 or 28.\r\n" );
document.write( "Then the next two, 8×9 = 72 and 28+72=100.  So:\r\n" );
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document.write( "1+2+3+4+5+6+7+8×9 = 100\r\n" );
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document.write( "           28+72  = 100\r\n" );
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document.write( "Edwin
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