Question

52. Let n≥2 be an integer. Take n distinct points on a circle and join each pair of points by a line segment. Colour the line segment joining every pair of adjacent points by blue and the rest by red. If the number of red and blue line segments are equal, then the value of n is

Answer 1

@dan815 @ganeshie8

Answer 2

total intersections = n choose 2
and the adjascent intersections are n-1 i guess

Answer 3

so
(n choose 2 )- (n-1) = n-1

Answer 4

solve for n

Answer 5

not intersections* i mean total lines sry

Answer 6

and i think its n not n-1 :)