There are points in a plane, no three of which are in the same straight line, except points which are collinear. Then the total number of triangles that can be formed with the vertices at any three of these points is:
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There are points in a plane, no three of which are in the same straight line, except points which are collinear. Then the total number of triangles that can be formed with the vertices at any three of these points is:
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