" are "12" points in a plane.The number of the straight lines joining any two of them when "3" of them are collinear "

There are 12 points in a lane.The number of the straight lines joining any two of them when 3 of them are collinear is 62 b.63 c.64d.65

There are 10 points in a plane and 4 of them are collinear. The number of straight lines joining any two of them is a. 4 b. 40 c. 38 d. 39

There are 10 points in a plane and 4 of them are collinear.The number of straight lines joining any two of them is 4 b.40 c.38 d.39

There are 10 points in a plane and 4 of them are collinear. Find the number of straight lines joining any two of them.

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 10 points in a plane and 4 of them are collinear. The number of straight lines joining any two points is

There are 10 points in a plane and 3 of them are collinear. The number of straight line joining any two points is ……….. .