The number of triangles that can be formed by choosing the vefrom a set of 12 points, seven of which lie on the same straight line, are:

The number of triangles that the can be formed by choosing the vertices from a set of 12 points, seven of which lie on the same straight line is (i) 105 (ii) 15 (iii) 175 (iv) 185

The number of triangles that are formed by choosing the vertices from a set of 12 points , seven of which lie on the same line, is :

The number of triangles that are formed by choosing the vertices from a set of 12 points, saven of which lie on the same line is

The number of straight lines that can be formed by joining 20 points no three of which are in the same straight lines except 4 of them which are in the same line