document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=993644>Question 993644</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the number of ways in which 5 large books, 4 medium-size books and 3 small books can be placed on a shelf so that all books with the same size are together? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #612889 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=612889\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Since all the books of the same size must be together, you effectively have but three groups, not twelve books...<BR>\n" );
document.write( "Thus three groups, call them A, B, and C, can only be arranged in six ways:<BR>\n" );
document.write( "ABC, ACB, BAC, BCA, CAB, and CBA. </SPAN>\n" );
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