document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=247205>Question 247205</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A biology gives a surprise quiz consisting of 15 multiple choice questions with 5 answer options.  Assume an unprepeared student decides to randomly select answers.  What is the chance this student has\r<BR>\n" );
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document.write( "a.  The first 7 answers correct and the last three answers wrong\r<BR>\n" );
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document.write( "b.  Any 7 or more of the questions correct </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #180386 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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/cgi-bin/show-face.mpl?user=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=180386\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a. (1/5)^7(4/5)^3=.00000655...<BR>\n" );
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document.write( "b. This is too long to write out the expansion.<BR>\n" );
document.write( " Let x=.2 and y=.8<BR>\n" );
document.write( "expand (x+y)^15<BR>\n" );
document.write( "Eliminate bits when x has an exponent of less than 7<BR>\n" );
document.write( " .0181... Answer.<BR>\n" );
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document.write( "Ed </SPAN>\n" );
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