There are `15` points in a plane, no three of which are in a st. line, except `6`, all of which are in a st.line. The number of st. lines which can be drawn by joining them is

There are 15 points in a plane, no three of which are in a straight line except 4, all of which are in a straight line. The number of triangles that can be formed by using these 15 points is:

There are 15 points in a plane, no three of which are in a straight line except 4, all of which are in a straight line. The number of triangles that can be formed by using these 15 points is:

There are 16 points in a plane no three of which are in a st , line except except 8 which are all in a st . Line The number of triangles that can be formed by joining them equals :

There are 10 points in a plane no three of which are collinear except 4 of them which lie on a line. The number of straight lines determined by them is

There are 10 points in a plane,no three of which are in the same straight line excepting 4 ,which ane collinear.Then,number of (A) straight lines formed by joining them is 40 (B) triangles formed by joining them is 116(C) straight lines formed by joining them is 45 (D) triangles formed by joining them is 120

Out of 18 points in a plane, no three are in the same straight line except 5 point which are collinear. Find the number of lines that can be formed by joining them?

There are n points in a plane no three of which are in the same line excepting p points which are collinear . The number of triangle fomed by joining them is