document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=879833>Question 879833</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A collection of 22 laptops include six defective laptops. If a sample of three laptops is randomly chosen from the collection, what is the probability that at least one laptop will be defective?\r<BR>\n" );
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document.write( "1-P(16/3 divided by 22/3)\r<BR>\n" );
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document.write( "I get .273, but I have been told that the answer is actually .636.\r<BR>\n" );
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document.write( "Am I missing something? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #531076 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=531076\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The probability that you pick 3 nondefective laptops is (16/22)*(15/21)*(14/20) = 0.3636\r<BR>\n" );
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document.write( "So the probability that at least 1 is defective is 1 - 0.3636 = 0.6364\r<BR>\n" );
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document.write( "Round that to 3 decimal places to get 0.636 </SPAN>\n" );
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