If the centroid of the triangle formed by the points P(a,b), Q(b,c) and R(c,a) is at origin, then . . .

Question : If the centroid of the triangle formed by the points P(a,b), Q(b,c) and R(c,a) is at origin, then find the value of a+b+c. [0]

Doubt by Gurjot (Added on 15/02/21)
Doubt by Muskan (Added on 7/02/2021)

Solution : Detailed Solution Coming Soon.