document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=54190>Question 54190</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am trying to work out this problem. Please check my work.What rule should apply in this one?  Thanks to all of you.\r<BR>\n" );
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document.write( "Your state government decides to raise money by running a lottery where each tickets cost $1.00 and you must choose four different whole numbers between 1-20. When 4 numbers between 1-20 are randomly selected, what is the probability of winning if you have one ticket and the winning numbers can be in any order?\r<BR>\n" );
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document.write( "4/20 * 4/4 = 16/80 = 1/5 or 0.2  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #36878 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=36878\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Since the winning numbers can be in any order there are 4! winning patterns.<BR>\n" );
document.write( "Since there are 20 numbers to choose from there are 20C4 patterns.<BR>\n" );
document.write( "Prob of having a winning pattern = 4!/(20C4)=24/4845=8/1615=0.00495....<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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