Nandini is the only daughter of Mayank's sister Sarika's brother. How is Nandini related to Mayank?
(d) Niece or Daughter
i think it should be (d), because the question says Sarika's brother (which can be mayank as it is clearly stated mayank's sister sarika) or if she has another brother, his niece.
D) Niece or daughter If Sarika has only one brother, then that is Mayank. Then if She is his daughter, then the answer is A. But if Sarika has a brother other than Mayank?? Then it will be B. Because daughter of sister is niece. So the complete option ---> A + B = ~C~ NO! D. D)Niece or daughter. Hence proved.