document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1123957>Question 1123957</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the sum of all possible 4-digit numbers that can be formed using the digits 2,4,5,6,7, and 8, with no repeated digits.<BR>\n" );
document.write( "A)2333100<BR>\n" );
document.write( "B)1360920<BR>\n" );
document.write( "C)2133120<BR>\n" );
document.write( "D)1599840<BR>\n" );
document.write( "C)1813450<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #740335 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52786)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ikleyn><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=ikleyn><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=740335\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .<BR>\n" );
document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;It was just solved under this link\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<A  rel=nofollow HREF=https://www.algebra.com/algebra/homework/word/misc/Miscellaneous_Word_Problems.faq.question.1123306.html>https://www.algebra.com/algebra/homework/word/misc/Miscellaneous_Word_Problems.faq.question.1123306.html</A>\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;https://www.algebra.com/algebra/homework/word/misc/Miscellaneous_Word_Problems.faq.question.1123306.html\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;but the solution was not precisely correct.\r<BR>\n" );
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document.write( "&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;So, &nbsp;I will place that solution here with my corrections.\r<BR>\n" );
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document.write( "In forming one of those 4-digit numbers, there are 6 choices for the first digit, then 5 for the second, \r\n" );
document.write( "4 for the third, and 3 for the fourth.  So the number of 4-digit numbers that can be formed is 6*5*4*3 = 360.\r\n" );
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document.write( "Imagine the list of those 360 numbers, ready to be added.  Each of the 6 digits is used the same number of times; \r\n" );
document.write( "and each of them is used the same number of times in each column.  That means that in each column of the list \r\n" );
document.write( "of the 360 numbers, each of the given digits is used 360/6 = 60 times.\r\n" );
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document.write( "The sum of the given digits is 2+4+5+6+7+8 = 32.  So the sum of the digits in each column is 60*32 = 1920.\r\n" );
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document.write( "And then the sum of the 360 numbers is\r\n" );
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document.write( "1920(1000+100+10+1) = 2133120            <<<---===  My editing is in THIS LINE.\r\n" );
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document.write( "<U>Answer</U>.  &nbsp;&nbsp;The sum is  &nbsp;2133120.   &nbsp;&nbsp;Option &nbsp;C)\r<BR>\n" );
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