document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1119812>Question 1119812</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 15 points are placed on a  circle. How many triangles is it  possible to form, such that their vertices will be the given points? </SPAN>\n" );
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document.write( "Any three points that are not collinear will form a triangle.<br><BR>\n" );
document.write( "If any number of points are placed on a circle, no three of them can be collinear.<br><BR>\n" );
document.write( "So you can form a triangle by choosing any 3 of the 15 points.  The number of ways to do that is \"15 choose 3\"<BR>\n" );
document.write( "=(15*14*13)/(3*2*1) = 455 </SPAN>\n" );
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