document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=163920>Question 163920</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A group of 3 students is to be selected from a group of 12 students to take part in a class in cell  biology.<BR>\n" );
document.write( "a) in how many ways can this be done?<BR>\n" );
document.write( "b) in how many ways can the group who will not take part be chosen? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #120770 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=120770\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A group of 3 students is to be selected from a group of 12 students to take part in a class in cell biology.<BR>\n" );
document.write( "a) in how many ways can this be done?<BR>\n" );
document.write( "Ans: 12C3 = [12*11*10]/[1*2*3] = 220<BR>\n" );
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document.write( "b) in how many ways can the group who will not take part be chosen?<BR>\n" );
document.write( "Ans: the answer is the same because for each group that is chosen<BR>\n" );
document.write( "there is a group that is not chosen.<BR>\n" );
document.write( "So 12C3 = 12C9<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( " </SPAN>\n" );
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