Jayant introduces a man to his friend as his wife's father's son. The man is Jayant's _____

Direction: Study the following information carefully and answer the questions given below:
Seven members are living in the family. Q is the daughter of P. B is the brother of R. G is the mother in law of A. B is married with A. B is the uncle of Q. D is the father of B.

What is the relation of B with respect to P?

X and Y are brothers. R is the father of Y. S is the brother of T and maternal uncle of X. What is the T to R? 

Introducing A man, a woman said. He is the only son of my mother ' s mother. How is the woman related to the man?

A, B and C are sisters, D is the brother of E and E is the daughter of B. How is A related to D?

Sunil has a son Karna and a sister Sangeeta who is the mother of Jagdish and  Vijay. Harnish is jagdish’s maternal uncle. How is Harnish related to Karna?

A is the brother of B. B is the brother of C. D is the father of A. Based on these three statements, which of the following statements cannot be definitely true? 

X is the son of Y. Y is Z's wife. W is the father of Z. So Y will be W.