document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=368845>Question 368845</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a box contains 25 transistors 6 of which are defective. if 6 are selected at random find the probability that\r<BR>\n" );
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document.write( "A) all are defective<BR>\n" );
document.write( "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 #262764 by </B><A HREF=/tutors/aboutme.mpl?userid=fractalier><B>fractalier(6550)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fractalier><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=fractalier><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=262764\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> There is a careful distinction here.  If six are chosen all at once, or are they chosen one at a time...I'll assume they are chosen all six at once...<BR>\n" );
document.write( "For A), the probability is (6/25)^6 = (.24)^6 = .019%<BR>\n" );
document.write( "For B), the probability is (19/25)^6 = (.76)^6 = 19.3% </SPAN>\n" );
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