document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=394623>Question 394623</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 7.A spyware is trying to break into a system by guessing its password. It does not give up until it tries 1 million different passwords. What is the probability that it will guess the password and break in if by rules, the password must consists of\r<BR>\n" );
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document.write( "j.	6 different lower-case letters<BR>\n" );
document.write( "k.	6 different letters, some may be upper-case, and it is case-sensitive<BR>\n" );
document.write( "l.	any 6 letters, upper- or lower-case, and it is case-sensitive<BR>\n" );
document.write( "m.	any 6 characters including letters and digits </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #280223 by </B><A HREF=/tutors/aboutme.mpl?userid=edjones><B>edjones(8007)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=edjones><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=edjones><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=280223\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> j) 1000000/(26*25*24*23*22*21)=1*10^6/165*10^6=1/165<BR>\n" );
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document.write( "k) 10^6/(52!/46!)=625/9161334<BR>\n" );
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document.write( "l) 10^6/52^6=15625/308915776<BR>\n" );
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document.write( "Ed </SPAN>\n" );
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