The number of straight lines obtained by joining 16 points on a plane, no twice of them being on the same line is (A) `120` (B) `110` (C) `210` (D) none of these

The number of straight lines that can be formed by joining 20 points no three of which are in the same straight lines except 4 of them which are in the same line

Out of 18 points in as plane, no three are in the same straight line except five points which re collinear. The num,ber of straight lines formed by joining them is (A) 143 (B) 144 (C) 153 (D) none of these

Ten points are plotted on a plane. Find the number of straight lines obtained by joining these points if no three points 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 12 points in a plane. The number of the straight lines joining any two of them when 3 of them are collinear is a. 62 b. 63 c. 64 d. 65