document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1105973>Question 1105973</A>: <I><SPAN STYLE=\"word-break: break-all;\"> After studying a couple's family history, a doctor determines that the probability of any child born to this couple having a gene for disease X is 1 out of 4.  If the couple has three children, what is the probability that exactly two of the children have the gene for disease X? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #721086 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=721086\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> P=(3C2)(1/4)^2*(3/4)^1<BR>\n" );
document.write( "=3*(1/16)*(3/4)<BR>\n" );
document.write( "=9/64<BR>\n" );
document.write( " </SPAN>\n" );
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