document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=804553>Question 804553</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An urn has 7 balls that are identical except that 3 are white and 4 are red. A sample of 4 is selected randomly without replacement.<BR>\n" );
document.write( "What is the probability that at least 2 of the balls are white? (Enter your answer as an exact fraction.)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #484865 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=484865\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An urn has 7 balls that are identical except that 3 are white and 4 are red. <BR>\n" );
document.write( "A sample of 4 is selected randomly without replacement.<BR>\n" );
document.write( "What is the probability that at least 2 of the balls are white? (Enter your answer as an exact fraction.)<BR>\n" );
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document.write( "Ways to win:: 2white&2red ; 3white&1red <BR>\n" );
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document.write( "P(at least 2 white) = [3C2*4C2 +3C3*4C1]/7C4 = [3*6+1*4]/35 = 22/35<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( " </SPAN>\n" );
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