document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=320901>Question 320901</A>: <I><SPAN STYLE=\"word-break: break-all;\"> if you make guesses for four multiple-choice test questions (each with five possible answers), what is the probability of getting at least one correct?  If a very lenient instructor says that passing the test occurs if there is at least one correct answer can you reasonably expect to pass by guessing </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #229809 by </B><A HREF=/tutors/aboutme.mpl?userid=toidayma><B>toidayma(44)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=toidayma><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=toidayma><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=229809\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The probability of getting at least one correct guess = 1 - the probability of getting no guess correct.<BR>\n" );
document.write( "The probability of getting one guess incorrect is : 4/5<BR>\n" );
document.write( "The probability of getting for guesses incorrect is (4/5)^4<BR>\n" );
document.write( "Therefore, the probability of passing the test is 1 - (4/5)^4. :-) </SPAN>\n" );
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