Avanish is a friend of Harsh. Pointing to an old man. Avanish asked Harsh. "who is he?" Harsh replied, "his son is my son's paternal uncle." How is the old man related to Harsh?

R is the brother of C. C is the brother of A. A is the mother of G. G is the son of H. How is R related to H?

F is the brother of G. G is the husband of H. H is the daughter of I. I is the wife of J. How is F related to J?

Z is the wife of S. M and C are daughters of S. T is the daughter of C. How is M related to T?