How is Nikhil related to Rama?
I. Nikhil is the only grandson of Rama's father-in-law.
II. Rama has no brother-in-law or sister-in-law.
If the data in both statements I and II together are necessary to answer the question
From Statement I and Statement II combined,
Clearly, Nikhil is Rama's son.
From Statement I alone, we could not certainly determine whether Nikhil is Rama's Son or Nephew.