document.write( "Question 863750: There are 12 freshman and 9 sophomores in a class. If 5 students are selected at random, find the probability that:
\n" ); document.write( "A) two are freshman \r
\n" ); document.write( "\n" ); document.write( "B) at least one is a sophomore
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Algebra.Com's Answer #520585 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!

\n" ); document.write( "Hi
\n" ); document.write( "21 students: 12F, 9S
\n" ); document.write( " 5 students are selected at random
\n" ); document.write( "P(2F) = \"%2812C2%29%289C3%29%2F%2821C5%29\"
\n" ); document.write( "P(at least one S) = \"%2821C5+-+12C5%29%2F%2821C5%29\" = 1 - 12C5/21C5 (1-P(5F)) \n" ); document.write( "
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