Q4Short answer
Out of 18 points in a plane, no three are in the same line except five points which are collinear. Find the number of lines that can be formed joining the point. [Hint: Number of straight lines = 18C2 – 5C2 + 1.]
Out of 18 points in a plane, no three are in the same line except five points which are collinear. Find the number of lines that can be formed joining the point. [Hint: Number of straight lines = 18C2 – 5C2 + 1.]