True or False:
There are 12 points in a plane of which no three are collinear except 5 of them, which lie in a line. The number of lines obtained by joining them is `."^(12)C_2` - `"^(5)C_2`+1

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 :

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 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

There are 12 points in a plane with 3 of them collinear .The number of lines joining any two of the points is :

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

Statement-1: There are pge8 points in space no four of which are in the same with exception of q ge3 points which are in the same plane, then the number of planes each containing three points is .^(p)C_(3)-.^(q)C_(3) . Statement-2: 3 non-collinear points alwasy determine unique plane.

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

4 points out of 8 points in a plane are collinear. Number of different quadrilateral that can be formed by joining them 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?

True/false -5/8 lis on the left on the number line.