document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1076837>Question 1076837</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A thief steals an ATM card and must randomly guess the correct five<BR>\n" );
document.write( "&#8203;-digit <BR>\n" );
document.write( "pin code from a 9<BR>\n" );
document.write( "&#8203;-key <BR>\n" );
document.write( "keypad. Repetition of digits is allowed. What is the probability of a correct guess on the first&#8203; try? And number of possible codes? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #691465 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=691465\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A thief steals an ATM card and must randomly guess the correct five<BR>\n" );
document.write( "&#8203;-digit <BR>\n" );
document.write( "pin code from a 9<BR>\n" );
document.write( "&#8203;-key <BR>\n" );
document.write( "keypad. Repetition of digits is allowed. What is the probability of a correct guess on the first&#8203; try? And number of possible codes? <BR>\n" );
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document.write( "Assuming 9-key mean zero up to 9,<BR>\n" );
document.write( "# of possible codes = 10^5 = 100000<BR>\n" );
document.write( "=====<BR>\n" );
document.write( "Probability of first try correct = 1/10^5<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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document.write( "</TD></TR></TABLE>\n" );