document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=777704>Question 777704</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you know to put either \"element of\"  or \"subset of\" in a math problem such as the square root of 7 _____ Irrational numbers? I know it is true but how do you know whether to put element or subset?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #474226 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39617)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=474226\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Square root of 7 is exactly one number.  Yes, it is irrational.  To say that it is an ELEMENT of the irrationals makes more sense than to say it is a subset of them.  IF YOU HAVE a rule that describes a set of numbers and square root of 7 be the only number which fits the rule, then you may be able to say that square root of 7 be a subset of the irrational numbers.  Having not been given such a rule, square root of 7 is an element of the set of irrationals. </SPAN>\n" );
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