document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1179571>Question 1179571</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A class contains 9 men and 3 women:<BR>\n" );
document.write( "a)How many committee of 4 student can be selected? Ans=495<BR>\n" );
document.write( "b)How many of them contain at least 2 women?           ?? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #809142 by </B><A HREF=/tutors/aboutme.mpl?userid=greenestamps><B>greenestamps(13200)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=greenestamps><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=greenestamps><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=809142\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <br><BR>\n" );
document.write( "a) 12 people to choose from; you are selecting 4:<br><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=C%2812%2C4%29=+%2812%2A11%2A10%2A9%29%2F%284%2A3%2A2%2A1%29+=+495 ALIGN=MIDDLE  ALT=\"C%2812%2C4%29=+%2812%2A11%2A10%2A9%29%2F%284%2A3%2A2%2A1%29+=+495\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "b) Here you have to choose EITHER 2 of the 3 women AND 1 of the 9 men OR all 3 of the 3 women AND 0 of the 9 men.  Convert the \"AND\"s to multiplication and the \"OR\"s to addition:<br><BR>\n" );
document.write( "(revised answer to correct some wrong numbers....)<br><BR>\n" );
document.write( "original post, WRONG: (you are not choosing a total of 3 people) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28C%283%2C2%29%2AC%289%2C1%29%29%2B%28C%283%2C3%29%2AC%289%2C0%29%29 ALIGN=MIDDLE  ALT=\"%28C%283%2C2%29%2AC%289%2C1%29%29%2B%28C%283%2C3%29%2AC%289%2C0%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "corrected post, RIGHT: (you are choosing a total of 4 people) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28C%283%2C2%29%2AC%289%2C2%29%29%2B%28C%283%2C3%29%2AC%289%2C1%29%29 ALIGN=MIDDLE  ALT=\"%28C%283%2C2%29%2AC%289%2C2%29%29%2B%28C%283%2C3%29%2AC%289%2C1%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><br><BR>\n" );
document.write( "You can do the calculations, similar to the one shown for part a.<br><BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );