document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=618569>Question 618569</A>: <I><SPAN STYLE=\"word-break: break-all;\"> what's the probability of getting 3 of the last 5 questions right out of 25 questions when I know 20 answers total? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #388985 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=388985\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You need to know the probability of getting<BR>\n" );
document.write( "one of those 5 answers right. If it true/false<BR>\n" );
document.write( "the prob is 1/2; if it's multiple choice with<BR>\n" );
document.write( "4 possible answers, prob = 1/4.<BR>\n" );
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document.write( "Then use P(x = 3) = 5C3*p^3*q^2 to get the<BR>\n" );
document.write( "prob of getting 3 right.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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