document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1075791>Question 1075791</A>: <I><SPAN STYLE=\"word-break: break-all;\"> On a 10 question multiple choice test (5 possible answers for each question), what is the probability of guessing at least 1 correct answer?<BR>\n" );
document.write( "Originally, I did 5 C 1, but it's probability, which means it needs to be a fraction. I was thinking I needed to find the probability of getting all of them wrong, and then subtracting that from 1. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #690434 by </B><A HREF=/tutors/aboutme.mpl?userid=jorel1380><B>jorel1380(3719)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jorel1380><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=jorel1380><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=690434\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Out of 5 possible answers for each question, 4 are wrong. So the probability of getting all questions wrong is .8^10, or 0.1073741824. The probability of getting at least one right is 1-0.1073741824, or 0.8926258176, or an 89.26258176% chance. &#9786;&#9786;&#9786;&#9786; </SPAN>\n" );
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