document.write( "Question 1076110: In a local high school, from a group of 16 students comprised of 7 singers and 9 actors, a 6-person executive council is selected.
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\n" ); document.write( "How many different executive councils are possible if the council must include at least
\n" ); document.write( "4 actors?\r
\n" ); document.write( "\n" ); document.write( "I tried 7C4 + 12C2 \r
\n" ); document.write( "\n" ); document.write( "Answer was 3612
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Algebra.Com's Answer #690849 by Boreal(15235)\"\" \"About 
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4 actors it is 9C4
\n" ); document.write( "Therefore, there are two singers and that is 7C2
\n" ); document.write( "126*21=2646
\n" ); document.write( "But it said at least 4 actors
\n" ); document.write( "Use 5. That is 9C5=126*7 ways to choose the singer=882
\n" ); document.write( "Use 6 actors, which is 9C6=84
\n" ); document.write( "2646+882+84=3612
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