Logic: The “brother of my wife” is the man’s brother-in-law. The brother-in-law’s father is the man’s father-in-law. Since the lady is the sister of that father (“her only brother”), she is the Sister of father-in-law.
Logic: “His mother’s only daughter” is the man’s sister. If the man’s sister is Anjali’s mother, then Anjali is the Niece of the man.
Logic: C and Q are sisters, and Z is their mother. P is the son of Z, so P is the brother of C and Q. Since C is A’s mother, P is A’s maternal uncle.
Logic: “Only son of my mother’s father” is Amar’s maternal uncle. If the girl’s uncle is also Amar’s uncle, the girl’s mother is Amar’s Mother (or aunt, but mother fits the direct lineage best here).
Logic: “Mother’s mother” is the grandmother. The grandmother’s only son is the woman’s maternal uncle. If the man is her uncle, the woman is his Niece.
Logic: C’s grandfather’s only son is C’s father. If B is the only child of C’s father, then B is C. Therefore, the grandfather remains the Grandfather.
Logic: “Grandson of my mother” is Amit’s son. The wife of Amit’s son is Amit’s daughter-in-law. Thus, Amit is her Father-in-law.
Logic: M is the parent of P. P is the parent of T. So M is the grandparent. Since M’s gender is not mentioned, it could be Grandfather or Grandmother.
Logic: Meena’s “father’s only daughter” is Meena herself. Since the boy is her daughter’s (herself) son, Meena is the Mother.
Logic: “Only daughter of my mother” is Rahul’s sister. If Sohan’s mother is Rahul’s sister, then Rahul is Sohan’s Uncle (Maternal Uncle/Mama).