document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=536292>Question 536292</A>: <I><SPAN STYLE=\"word-break: break-all;\"> The traditional French greeting is to kiss the other person on each cheek. So, when two traditional French friens meet, one kisses the second on both cheeks and the second person kisses the first on both cheeks. Write a formula for the total number of kisses, k in terms of the number of friends, f.\r<BR>\n" );
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document.write( "I am so lost as to how to start. Thanks in advance for any help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #352246 by </B><A HREF=/tutors/aboutme.mpl?userid=fcabanski><B>fcabanski(1391)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=fcabanski><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=352246\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Usually the pattern becomes clear after you examine the first 3-5 terms.<P><BR>\n" );
document.write( "Each friend kisses every other friend twice.<P><BR>\n" );
document.write( "f=2, k=4  ----->4=2*2*1<P><BR>\n" );
document.write( "f=3, k=12 ----->12=3*2*2<P><BR>\n" );
document.write( "f=4, k=24----->24=4*2*3<P><BR>\n" );
document.write( "Note that each time the first term is f, the second term is 2, and the third term is one less than f<P>\r<BR>\n" );
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document.write( "k=f*2*(f-1)<BR>\n" );
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