Question

what is the formula for finding the no. of point when the line is given?

Answer 1

question really does not make sense..please rephrase..

Answer 2

like \[l=n(n-1)\div2\]

Answer 3

I think the asker means point of intersections?

Answer 4

so you req 2 lines minimum..ques is still absurd..

Answer 5

So, for n=1, P(n) = 0

Answer 6

o.O

Answer 7

And actually, the asker has given the formula already.
See this : https://sites.google.com/site/funproblemsolving/mathclub-problems/maximum-number-of-points-of-intersection-of-6-lines

* It should be the maximum number of intersection

Answer 8

@Callisto geniuseta! :D