Blood Relations Questions

Pointing to a woman, a girl says, "Her daughter-­in-­law is married to the only son of my husband's mother-­in-­law." How is the girl related to the woman?

A is father of X ; B is mother of Y. The sister of X and Z is Y. Which of the following statements is definitely not true ? 

A family consists of six members P, Q, R, S, T and U. There are two married couples. Q is a doctor and the father of T. U is grandfather of R and is a contractor. S is grandmother of T and is a housewife. There is one doctor, one contractor, one nurse, one housewife and two students in the family.  Who is the husband of P? 

If Kamal says, ellavi's mother is the only daughter of my mother", how is Kamal related to Ravi  

Eric is the son of Tom who is the brother of Jerry who is the daughter of Sin. Doremon is the sister of Popoy who is son of Chain. Ivanka is the daughter of Popoy who is the husband of Jerry. Sin is the male person and Chain is the female person.

How is Ivanka related to Eric ?

If [P @ Q] means [P is wife of Q], [P+Q] means [P is father of Q] and [P - Q] means [P is sister of Q] then in [G+ H - R @ D], how is G related to D ?

B3D means B is the father of D.
B7D means B is the sister of D.
B2D means B is the brother of D.
B1D means B is the wife of D.

Which of the following means F is the mother of K?

Pointing to a photograph, a woman says, "This man's son's sister is my mother-in-law." How is the woman's husband related to the man in the photograph ?