document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=414461>Question 414461</A>: <I><SPAN STYLE=\"word-break: break-all;\"> in a bag of 4 yellow and 8 blue marbles. three are selected at random without replacement. what is the probabilitlity that all 3 are yellow or all 3 are blue? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #290692 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=290692\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> in a bag of 4 yellow and 8 blue marbles. three are selected at random without replacement. what is the probabilitlity that all 3 are yellow or all 3 are blue?<BR>\n" );
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document.write( "P(3 blue) = 8C3/12C3<BR>\n" );
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document.write( "P(3 yellow) = 4C3/12C3<BR>\n" );
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document.write( "P(3 blue or 3 blue) = [8C3 + 4C3]/12C3 = [56 + 4]/[12*11*10/6]<BR>\n" );
document.write( "= [6*60/[1320] = 0.273<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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