There are 10 points in a plane of which 4 are collinear. No three of the remaining 6 points are collinear. How many different straightlines can be drawn by joining them?

There are 20 points in a plane, of which 5 points are collinear and no other combination of 3 points are collinear. How many different triangles can be formed by joining these points?

There are 25 points in a plane. Six of these are collinear and no other combination of 3 points are collinear. How many different straight lines can be formed by joining these points?

There are 10 points on a plane of which 5 points are collinear.Also,no three of the remaining 5 points are collinear.Then find (i) the number of straight lines joining these points: (ii) the number of triangles,formed by joining these points.

There are 10 points on a plane of which 5 points are collinear. Also, no three of the remaining 5 points are collinear. Then find (i) the number of straight lines joining these points: (ii) the number of triangles, formed by joining these points.

There are 10 points on a plane of which 5 points are collinear. Also, no three of the remaining 5 points are collinear. Then find (i) the number of straight lines joining these points: (ii) the number of triangles, formed by joining these points.

There are 10 points on a plane of which 5 points are collinear. Also, no three of the remaining 5 points are collinear. Then find (i) the number of straight lines joining these points: (ii) the number of triangles, formed by joining these points.

There are 12 points in a plane, out of which 3 points are collinear. How many straight lines can be drawn by joining any two of them?

There are 18 points in a plane of which 5 are collinear. How many straight lines can be formed by joining them?

10 points lie in a plane,of which 4 points are collinear.Barring these 4 points no three of the 10 points are collinear.How many distinct quadrilaterals can be drawn?

There are 21 points in a plane no three of which are collinear . The number of triangle by joining them is