document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=320334>Question 320334</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A box contains 24 widgets, 4 of which are defective. If 4 are sold at random, find the probability that a) all are defective b) none are defective. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #229420 by </B><A HREF=/tutors/aboutme.mpl?userid=nyc_function><B>nyc_function(2741)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nyc_function><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=nyc_function><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=229420\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Part (a):\r<BR>\n" );
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document.write( "p(all are defective) = 4/24 = 1/6\r<BR>\n" );
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document.write( "Part (b):\r<BR>\n" );
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document.write( "p(none of defective) = 1 - 4/24 \r<BR>\n" );
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document.write( "p(none of defective) = 24/24 - 4/24\r<BR>\n" );
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document.write( "p(none of defective) = 20/24 = 5/6\r<BR>\n" );
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