document.write( "Question 999858: How many digit are used to write number from 1 to 100. \n" ); document.write( "
Algebra.Com's Answer #617408 by AnlytcPhil(1810)\"\" \"About 
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document.write( "1,2,...,9,10,11,...,99,100\r\n" );
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document.write( "There are 9 1-digit numbers.  That's 9 digits.\r\n" );
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document.write( "There is only 1 3-digit number, which is 100. \r\n" );
document.write( "That's 3 more digits.\r\n" );
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document.write( "The other 90 numbers are all two-digit numbers,\r\n" );
document.write( "   so that's 2×90 or 180 digits.\r\n" );
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document.write( "Total 9+3+180 = 192 digits.\r\n" );
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document.write( "Edwin
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