Introducing Rajat to a guest, Ajay said, "He is the only son of my father's daughter-in law". How is Ajay related to Rajat?
Show answer & explanation
Correct answer: D
Explanation
The correct answer is option 4 i.e. Either father or uncle.
In the diagram shown:
Square shows males, the circle shows females, vertical lines show generations, a single horizontal line shows brothers or sisters and double lines show a couple.

Thus considering the figure, Ajay is either father or uncle of Rajat.
Hence, considering all the four options the most appropriate is option 4.