document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1156540>Question 1156540</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a*b=[{a+b}/5]-1 for all a,b in R,<BR>\n" );
document.write( "1.is R closed?<BR>\n" );
document.write( "2. is the operation commutative?<BR>\n" );
document.write( "3. is the operation associative? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #779404 by </B><A HREF=/tutors/aboutme.mpl?userid=ikleyn><B>ikleyn(52832)</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=779404\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> .\r<BR>\n" );
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document.write( "What is \" R \" in your post ?\r<BR>\n" );
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document.write( "To answer first question, it is NECESSARY to know WHAT this \" R \" is.\r<BR>\n" );
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document.write( "But your post does not define it . . . \r<BR>\n" );
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document.write( " </SPAN>\n" );
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