The husband of the lady is Anupam’s son-in-law.

Quick Scoop: What’s going on here?

This is a classic blood-relation puzzle that has shown up in many reasoning and competitive exam question banks over the years.

The final relationship they all converge on is that the lady in the car is Anupam’s daughter, so her husband must be Anupam’s son-in-law.

“The only daughter of the brother of my wife is the sister-in-law of the brother of your sister.”

This sentence is deliberately twisted to confuse “brother of your sister” (which is just your brother) with the husband, but it actually points to the lady’s brother, not her spouse.

Step-by-step breakdown (story style)

Imagine Anupam is talking to a lady sitting in a car.

  1. “Brother of my wife”
    • This is Anupam’s brother-in-law (his wife’s brother).
  1. “The only daughter of the brother of my wife”
    • That brother-in-law has one daughter, call her X (a niece from the wife’s side).
  1. “Is the sister-in-law of the brother of your sister”
    • “Brother of your sister” is simply your brother (the lady’s brother).
 * X is the **sister-in-law** of that brother.
 * For X to be sister-in-law of the lady’s brother, a consistent setup used in standard solutions is that the lady is actually Anupam’s daughter, and her brother (Anupam’s son) is married to X’s sister, making X his sister-in-law.
  1. Putting this family graph together
    • In widely accepted exam explanations, they then note that Anupam’s son-in-law is the brother of the lady sitting in the car.
 * Since her brother is Anupam’s son-in-law, the lady herself is Anupam’s daughter, so her husband must also be Anupam’s **son-in-law**.

Final relationship

  • Lady in the car → treated as Anupam’s daughter in the standard resolution of this puzzle.
  • Her husband → therefore son-in-law of Anupam.

Answer: Son-in-law.

Information gathered from public forums or data available on the internet and portrayed here.