There are 16 points, no three of which are in the same straight line. Find the number of straight lines that cat be formed by joining them.

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?

If 7 points out of 12 are in the same straight line, then the number of triangles formed is :

In the fig AOB is a straight line. Find the value of x

There are 15 points in a plane, no three of which are collinear. Find the number of triangles formed by joining them.

There are 12 points in a plane in which 6 are collinear. Number of different straight lines that can be drawn by joining them, is a.51 b.52 c.132 d.18

Given p points in a plane, no three of which are collinear q of these Points, which are in the same straight line. Determine the number of (I) straight lines

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 :

Number of triangles formed by joining 12 points, 7 of which are in the same straight line, is :

There are 10 points in a plane out of these points no three are in the same straight line except 4 points which are collinear. How many (i) straight lines (ii) trian-gles (iii) quadrilateral, by joining them?

Fill ups …………….points are sufficeints to draw a straight line.