The number of lines that can be formed from 12 points is a plane of which no three of them are collinear except 6 points lie on a a line is

The number of lines that can be formed from 12 points in a plane of which 6 points lie on a line is

The number of lines that can be formed from 12 points in a plane of which 6 points lie on a line is

How many different straight lines can be formed from 30 points in a plane? (no three points are collinear)

The number of straight lines that can be formed by n points in a plane, where no three points are collinear is _____ and in case p of the given points are collinear is _____ .

There are 10 points in a plane of which no three of which no three of the points are collinear except 5 points which lie on a line . I : The number of straight lines by joining them is 35 . II : the number of triangles formed by joining them is 110

There are 12 points in a plane of which 5 are collinear. Except these five points no three are collinear, then

There are 12 points in a plane of which 5 are collinear. Except these five points no three are collinear, then