document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=902252>Question 902252</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The mathmatics club at a  certain university is composed of 15 undergraduate and 6 graduate students. Three students from the club were selected, and each was asked to teach a class at a high school.<BR>\n" );
document.write( "A) how many distinct groups of 3 students can be formed?<BR>\n" );
document.write( "B) find the probability that the selected group has exactly two graduate students.<BR>\n" );
document.write( "C) find the probability that the selected group has at least one undergraduate student.<BR>\n" );
document.write( "Could someone help me with this Qs please </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #547191 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=547191\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A) how many distinct groups of 3 students can be formed? 21C3<BR>\n" );
document.write( " B) find the probability that the selected group has exactly two graduate students.<BR>\n" );
document.write( "P = <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%286C2%29%2815C1%29%2F%2821C3%29 ALIGN=MIDDLE  ALT=\"%286C2%29%2815C1%29%2F%2821C3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " C) find the probability that the selected group has at least one undergraduate student.<BR>\n" );
document.write( "P = 1 - P(no UG) = 1 - <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%286C3%29%2815C0%29%2F%2821C3%29 ALIGN=MIDDLE  ALT=\"%286C3%29%2815C0%29%2F%2821C3%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );