document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=545783>Question 545783</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A bag contains 20 blue and 15 green marbles. Two marbles, without replacement are drawn at random.<BR>\n" );
document.write( "What is the probability that both are blue? What is the probablity that at least one of them is blue? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #355745 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=355745\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A bag contains 20 blue and 15 green marbles. Two marbles, without replacement are drawn at random.<BR>\n" );
document.write( "What is the probability that both are blue? What is the probablity that at least one of them is blue?<BR>\n" );
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document.write( "P(none are blue) = 15C2/35C2 = 105/595<BR>\n" );
document.write( "----<BR>\n" );
document.write( "P(at least one is blue) = 1 - P(none is blue) = 1-0.1765 = 0.8235<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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