document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=784471>Question 784471</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In a class of 10 children, what is the probability that 2 friends will be chosen to go on a trip.<BR>\n" );
document.write( "Only 2 will be chosen. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #477106 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=477106\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 10C2=n!/(r!(n-r!))<BR>\n" );
document.write( "=10!/(2!*8!)<BR>\n" );
document.write( "=10*9*8!/8!*2<BR>\n" );
document.write( "=10*9/2<BR>\n" );
document.write( "=45<BR>\n" );
document.write( "There are 45 ways to choose 10 children 2 at a time so the probability that the two friends will be chosen to go is 1/45.<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Ed </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );