document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1154967>Question 1154967</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bag contains seven white and five black discs. Three disks are chosen from the bag. Find the probability so that after each draw the disc is replaced by one of the opposite colour. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #777503 by </B><A HREF=/tutors/aboutme.mpl?userid=VFBundy><B>VFBundy(438)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=VFBundy><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=VFBundy><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=777503\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Probability of WHITE-BLACK-WHITE = 7/12 * 5/11 * 6/10 = 210/1320<BR>\n" );
document.write( "<pr><BR>\n" );
document.write( "Probability of BLACK-WHITE-BLACK = 5/12 * 7/11 * 4/10 = 140/1320<BR>\n" );
document.write( "<pr><BR>\n" );
document.write( "Probability of either = 210/1320 + 140/1320 = 350/1320 = <b>35/132</b> </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );