Pointing to a lady in a photograph, Vijay said, “Her sister’s mother is the sister of my father’s daughter.” How is the lady related to Vijay?

Pointing to Ramesh, Radha said, “His father is the only son of my grandfather”. How is Radha Related to Ramesh?

A and B are brothers. C and D are sisters. A’s son is D’s brother. How is B related to C ?

A is B’s brother, C is A’s mother, D is C’s father, E is B’s son. How is D related to A ? 

Introduction a boy, a girl said, "He is the son of the sister of my mother's brother." The girl has no real brother. How is that boy related to that girl?

Q’s father is B’s son-in-law. C is Q’s sister and the daughter of P. P is the maternal aunt of D. How is P related to B?

M is the son of N. O is the father of N. P is the father of M. How is N related to P?

Pointing towards a lady in a picture, Suresh says, “She is the only daughter-in-law of my paternal grandfather’s wife.” How is the lady related to Suresh?