Blood Relations Questions

Introducing a man, a woman says, "He is the son-in-law of the wife of my father and I am the only child of my parents". How is the man related to the woman?

Q is P's sister. R is P's mother. M is Mrs. R's father. How is Q's father related to M?

Raju's wife is the sister of Rakesh's son. How is Raju related to Rakesh?

Pointing towards a girl, Chetan said "She is the daughter of the only child of my grandmother". How is Chetan related to that girl?

Pointing towards a lady in a photograph, Sushma says, "She is the mother of my grandfather's son". How is Sushma related to the lady in the picture?

Rajiv is the brother of Arun. Sonia is the sister of Sunil. Arun is the son of Sonia. How is Rajiv related to Sunil?

Raju introduces Yash by saying, "He is the husband of the granddaughter of my grandmother's husband". How is Yash related to Raju?

If X's mother is the only daughter of Y's father, then Y's husband 's father is X's ___.