document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=730920>Question 730920</A>: <I><SPAN STYLE=\"word-break: break-all;\"> two representatives are chosen at random from a group of 180 students that has 90  girls and 90 boys. what is the probability that the representatives selected are either both boys or both girls? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #446913 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=446913\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> two representatives are chosen at random from a group of 180 students that has 90 girls and 90 boys. what is the probability that the representatives selected are either both boys or both girls?<BR>\n" );
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document.write( "# of same sex pairs: 2*90C2 = 2*4005 = 8010<BR>\n" );
document.write( "# of general pairs:: 180C2 = 16110<BR>\n" );
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document.write( "P(same sex) = 8010/16110 = 0.4972<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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