document.write( "Question 192269: Q: There are 12 points in a plane of which 5 are collinear. The number of triangles is?\r
\n" );
document.write( "\n" );
document.write( "I think we have to combine C(5,2) (out of 5 collinear, 2 points can form a side of triangle) with the combination of the rest of the points... but i m not getting any answer out of the four options
\n" );
document.write( "a)200
\n" );
document.write( "b)211
\n" );
document.write( "c)210
\n" );
document.write( "d)none of these \n" );
document.write( "
Algebra.Com's Answer #367127 by sEahors3(6)![]() ![]() ![]() You can put this solution on YOUR website! (12 nCr 3) - (5 nCr 3) = 210 \n" ); document.write( "so it is C \n" ); document.write( "medur =) \n" ); document.write( " |