document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=486760>Question 486760</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Some One please help to solve this<BR>\n" );
document.write( "There are 12 points in a plane of  which 5 are collinear. The number of triangle is<BR>\n" );
document.write( "The answer Is  210\r<BR>\n" );
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document.write( "I don’t know how to do ???? please Explain\r<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #332799 by </B><A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><B>sudhanshu_kmr(1152)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=sudhanshu_kmr><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=sudhanshu_kmr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=332799\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "To form a triangle we have to choose only 3 points in a plane but, these must not \r<BR>\n" );
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document.write( "collinear. So, firstly we will find total no. of ways to select 3 points from 12 \r<BR>\n" );
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document.write( "points and then subtract the number of triangle that will form by using only 5 \r<BR>\n" );
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document.write( "collinear points.  \r<BR>\n" );
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document.write( "12C3 - 5C3 = 220- 10 = 210\r<BR>\n" );
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document.write( "if any doubt, u r welcome to contact : <BR>\n" );
document.write( "http://www.algebra.com/tutors/aboutme.mpl?userid=sudhanshu_kmr </SPAN>\n" );
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