document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1071751>Question 1071751</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A lock has a disk with 31 numbers written around its edge. The combination to the lock is made up of three numbers (such as 12-33-07 or 19-19-08). How many different possible combinations are there for this lock?\r<BR>\n" );
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document.write( "What is the probability of randomly guessing the correct one? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #686695 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=686695\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A lock has a disk with 31 numbers written around its edge. The combination to the lock is made up of three numbers (such as 12-33-07 or 19-19-08). How many different possible combinations are there for this lock? <BR>\n" );
document.write( "What is the probability of randomly guessing the correct one? <BR>\n" );
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document.write( "If there is no repetition of numbers the answer is 31P3 = 31*30*29<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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