document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=332309>Question 332309</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how many ways can 3 books be placed on a shelf if chosen from a selection of 7 different books? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #238184 by </B><A HREF=/tutors/aboutme.mpl?userid=nyc_function><B>nyc_function(2741)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nyc_function><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=nyc_function><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=238184\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use nPr = n!/(n-r)!\r<BR>\n" );
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document.write( "Let n = 7\r<BR>\n" );
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document.write( "Let r = 3\r<BR>\n" );
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document.write( "7P3 = 7!/(7-3)!\r<BR>\n" );
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document.write( "7P3 = 5040/4!\r<BR>\n" );
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document.write( "7P3 = 5040/24\r<BR>\n" );
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document.write( "7P3 = 210\r<BR>\n" );
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document.write( "There are 210 ways or permutations.\r<BR>\n" );
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