Question

there are four lines in a plane , no two of which are parallel.the maximum number of points in which they can intersect is:

a}4

b}5

c}6

d}7

IS THERE ANY PROOF OR FORMULA FOR THESE KIND OF QUESTIONS?

Answer 1

Yes there is a formula
Maximum number of points of intersection (Pi) of n non parallel lines is
(n-1)n/2

=4*(4-1)/2

=4*3/2

=12/2 =6