document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=507246>Question 507246</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Five balls are selected at random without replacement from an urn containing three white balls and five blue balls. Find the probability that two or three of the balls are white. \r<BR>\n" );
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document.write( "The \"two OR three of the balls are white\" is confusing me! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #340458 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=340458\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Five balls are selected at random without replacement from an urn containing three white balls and five blue balls. Find the probability that two or three of the balls are white. <BR>\n" );
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document.write( "P(A or B) = P(A) + P(B) - P(A and B)<BR>\n" );
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document.write( "P(2 or 3 white) = P(2 white) + P(3 white) -0<BR>\n" );
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document.write( "P(2 white and 3 blue) = [3C2*5C3]/8C5 = (3*10)/56 = 30/56<BR>\n" );
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document.write( "P(3 white and 2 blue) = [3C3*5C2]/8C5 = (1*10)/56 = 10/56<BR>\n" );
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document.write( "Ans: P(2 white or 3 white) = (30+10)/56 = 40/56<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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