A bind person after walking 10 steps in one direction each of length 80cm, turns randomly to the left or to right by 90∘. After walking a total of 40 steps, the maximum displacement of the person from its starting point can be

Question : A bind person after walking 10 steps in one direction each of length 80cm, turns randomly to the left or to right by 90∘. After walking a total of 40 steps, the maximum displacement of the person from its starting point can be