Ajay said, "This girl is the wife of the grandson of my mother". Who is Ajay to the girl?
Explanation
1. "My mother":
This refers to Ajay's mother.
2. "Grandson of my mother":
The grandson of Ajay's mother would be Ajay's own son.
Grandson of Ajay’s Mother=Ajay’s Son
3. "Wife of the grandson":
This refers to the wife of Ajay's son.
Establishing the Relation
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Since the girl is the wife of Ajay's son, she is Ajay's daughter-in-law.
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Conversely, Ajay is the father of her husband.
Mathematical Logic Representation
Let A be Ajay, M be Ajay's Mother, S be Ajay's Son, and G be the Girl.
Since G=Wife(Son(A))⟹A=Father-in-law of G
Final Answer
Ajay is the Father-in-law of the girl.