document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=477872>Question 477872</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A pen holder holds twelve pens, five of which do not write. If five pens are chosen at random, find the probability that at least one<BR>\n" );
document.write( "(a) writes. (b) does not write.\r<BR>\n" );
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document.write( "Please Please include full step by step, I have the answer, I need to see the work for my test, I just can't figure it out and can't find another example of this. THANK YOU! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #327445 by </B><A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><B>sudhanshu_kmr(1152)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><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=sudhanshu_kmr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=327445\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "number of ways to select 5 pens out of 12= 12C5 = 792\r<BR>\n" );
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document.write( "probability that no one write  P(A)= 5C5/792 = 1/792\r<BR>\n" );
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document.write( "a) probability that at least one write P(A')= 1 - P(A) = 791/792\r<BR>\n" );
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document.write( "probability that all write P(B) = 7C5/792 = 21/792\r<BR>\n" );
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document.write( "b) <BR>\n" );
document.write( "probability that at least does not write P(B')= 1 - P(B) = 771/792\r<BR>\n" );
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document.write( "if any doubt, you are welcome to contact.<BR>\n" );
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