document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=283956>Question 283956</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a teacher gives four students their written papers randomly<BR>\n" );
document.write( "what is the probability that :<BR>\n" );
document.write( "1- each one gets his own paper?<BR>\n" );
document.write( "2- the first one gets his own paper?<BR>\n" );
document.write( "3- 2 of them get their own papers?<BR>\n" );
document.write( "4- no one gets his own paper ? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #206163 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=206163\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1) 1/4!=1/24<BR>\n" );
document.write( "2) 1/4<BR>\n" );
document.write( "3)  2 of them get their own papers (and 2 do not): 6/24=1/4 <BR>\n" );
document.write( "4) 9/24=3/8<BR>\n" );
document.write( "For 3 and 4 I enumerated the possible permutations in order to find the answers.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );