what is the probability of getting equilateral triangles from the vertices of regular hexagon ?
total no . of triangles that can b made with the vetices hexagon = 6 c 3 = 20 no . of possible outcomes i . e . no . of equality triangles = 2 . . ' . probability = 2 / 20 = 1 / 10 answer : a
divide(const_2, choose(add(const_3, const_3), const_3))