document.write( "Question 1050129: What is the number that starts with three and ends with one that is four digits long and divisible by nine \n" ); document.write( "
Algebra.Com's Answer #665709 by ikleyn(53765)\"\" \"About 
You can put this solution on YOUR website!
.
\n" ); document.write( "The number is divisible by 9 if and only if the sum of its digits is divisible by 9.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "See the lesson \r
\n" ); document.write( "\n" ); document.write( "    - Divisibility by 9 rule \r
\n" ); document.write( "\n" ); document.write( "in this site.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Therefore 3771, 3681, 3861, 3051 are the solutions, for example.\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );