document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=348343>Question 348343</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Urn A has 6 white and 4 red balls. Urn B has 16 white and 13 red balls. We flip a fair coin. If the oucome is heads, then a ball from urn A is selected, whereas if the oucome is tails, then a ball from urn B is selected. Suppose that a red ball is selected. What is the probability that the coin landed heads?\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #249044 by </B><A HREF=/tutors/aboutme.mpl?userid=math10123><B>math10123(2)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=math10123><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=249044\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> urn a has 4 red balls. whenever a head appears urn a gets it. So the problem asks to write the probability of getting a red ball. So the answer is 4/39. </SPAN>\n" );
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