The number of triangles that can be formed with 10 points as vertices `n` of them being collinear, is 110. Then `n` is a. `3` b. `4` c. `5` d. `6`

Number of triangles that can be formed by joining the 10 non-collinear points on a plane is

Let T_n denote the number of triangles, which can be formed using the vertices of a regular polygon of n sides. It T_(n+1)-T_n=21 ,then n equals a. 5 b. 7 c. 6 d. 4

There 12 points in a plane of which 5 are collinear . Find the number of triangles that can be formed with vertices at these points.

If b=3,c=4,a n dB=pi/3, then find the number of triangles that can be constructed.

If b=3,c=4,a n dB=pi/3, then find the number of triangles that can be constructed.

Prove that the points (a ,b+c),(b ,c+a)a n d(c ,a+b) are collinear.

Number of circles that can be drawn through three non-collinear points is (a) 1 (b) 0 (c) 2 (d) 3

There are 10 points in a plane and 4 of them are collinear. The number of straight lines joining any two of them is a. 4 b. 40 c. 38 d. 39

The area of the triangle formed by joining the origin to the point of intersection of the line xsqrt(5)+2y=3sqrt(5) and the circle x^2+y^2 =10 is (a) 3 (b) 4 (c) 5 (d) 6

Find the value of k if the points A(2,\ 3),\ B(4,\ k)\ a n d\ C(6,\ 3) are collinear.