document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1127625>Question 1127625</A>: <I><SPAN STYLE=\"word-break: break-all;\"> On a bookshelf, there are five different mystery books and six different biographies.  How many different sets of four books can Emilio choose if two books must be mystery books and two of the books must be biographies? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #744054 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=744054\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> On a bookshelf, there are five different mystery books and six different biographies. How many different sets of four books can Emilio choose if two books must be mystery books and two of the books must be biographies? <BR>\n" );
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document.write( "Two mystery books:: 5C2 = (5*4)/(1*2) = 10 sets<BR>\n" );
document.write( "Two biography books:: 6C2 = (6*5)/(1*2) = 15 sets<BR>\n" );
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document.write( "Ans:: # of combined sets:: 10*15 = 150 sets<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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