document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=293441>Question 293441</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how many different ways can a researcher select three mice from 15 mice and assign them each to a different test?<BR>\n" );
document.write( "thank you! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #211835 by </B><A HREF=/tutors/aboutme.mpl?userid=unlockmath><B>unlockmath(1688)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=unlockmath><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=unlockmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=211835\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Hello, <BR>\n" );
document.write( "The formula is nPr=n!/(n-r)!<BR>\n" );
document.write( "So it would look like this:<BR>\n" );
document.write( "15!/(15-3)! This expands out to:<BR>\n" );
document.write( "(15x14x13x12x11x10x9x8x7x6x5x4x3x2x1)/(12x11x10x9x8x7x6x5x4x3x2x1)<BR>\n" );
document.write( "I'll let you do the calculations from here. <BR>\n" );
document.write( "Make sense?<BR>\n" );
document.write( "RJ<BR>\n" );
document.write( "www.math-unlock.com </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );