document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1195802>Question 1195802</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What are the three rightmost digits of the sum 1!+2!+3!+...+2020!? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #828331 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=828331\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What are the three rightmost digits of the sum 1!+2!+3!+...+2020!?<BR>\n" );
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document.write( "14! = 87178291200<BR>\n" );
document.write( "15*14! ---> the 3 right digits are 000, and all higher factorials with have 000 to the rightmost digits.<BR>\n" );
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document.write( "The sum of 1! to 14! = 93928268313<BR>\n" );
document.write( "The last 3 digits are 313. </SPAN>\n" );
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