document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=390478>Question 390478</A>: <I><SPAN STYLE=\"word-break: break-all;\"> There are 2 girls and 7 boys in a math club. A team of four persons must be chosen for a tournament, and there must be at least 1 girl on the team. In how many ways can this be done? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #276919 by </B><A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><B>sudhanshu_kmr(1152)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><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=sudhanshu_kmr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=276919\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2 girls, 7 boys , total 9 persons\r<BR>\n" );
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document.write( "No. of ways to choose 4 persons from 9 = 9C4\r<BR>\n" );
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document.write( "no. of ways to choose 4 persons from 7 boys = 7C4  ( no girls)\r<BR>\n" );
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document.write( "according to question, there must be at least 1 girl, so we will reduce number of ways in which no girls in team...\r<BR>\n" );
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document.write( "total no. of ways in which there must be at least 1 girl = 9C4 -7C4\r<BR>\n" );
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document.write( "= 126 - 35\r<BR>\n" );
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document.write( "=91\r<BR>\n" );
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document.write( "if any problem related to the concept, u r welcome to contact ......\r<BR>\n" );
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document.write( " </SPAN>\n" );
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