Understanding the Family Relationships

Let's break down the relationships described in the question step by step to figure out how Vijay's son-in-law is related to Sanjay.

Analyzing the First Statement

The first statement says: "Vijay is the father of Sanjay’s mother."

• This tells us that Vijay is the parent of Sanjay's mother.
• Therefore, Vijay is Sanjay's maternal grandfather.

Analyzing the Second Statement

The second statement says: "Sanjay is the son of Vijay’s only son-in-law."

• This statement has two key pieces of information:
  • Sanjay is the son of a specific person: Vijay's only son-in-law.
  • Vijay has only one son-in-law.
• We already established that Vijay is Sanjay's maternal grandfather, meaning Vijay has a daughter who is Sanjay's mother.
• Since Vijay has only one son-in-law, and his daughter (Sanjay's mother) must be married to have a son like Sanjay, this son-in-law must be the husband of Vijay's daughter (Sanjay's mother).
• So, Vijay's only son-in-law is the husband of Sanjay's mother.

Connecting the Relationships

We know:

• Vijay's son-in-law is the husband of Sanjay's mother.
• Sanjay is the son of Vijay's son-in-law.

If Sanjay is the son of Vijay's son-in-law, and Vijay's son-in-law is the husband of Sanjay's mother, then Vijay's son-in-law is directly the father of Sanjay.

Determining the Final Relationship

The question asks: "How is Vijay’s Son-in-law related to Sanjay?"

Based on our analysis, Vijay's son-in-law is the father of Sanjay.