Data Sufficiency — family relation: how is Sulekha related to Nandini? Statements: I. Sulekha's husband is the only son of Nandini's mother. II. Sulekha's brother and Nandini's husband are cousins. Choose the correct sufficiency option.
Verbal Reasoning
Data Sufficiency
Difficulty: Easy
Choose an option
Answer
Correct Answer: I alone is sufficient while II alone is not sufficient
Explanation
Interpret Statement I The “only son of Nandini’s mother” is Nandini’s brother. Sulekha is his wife ⇒ Sulekha is Nandini’s sister-in-law. I alone gives the relation.
Interpret Statement II Sulekha’s brother and Nandini’s husband being cousins does not uniquely fix Sulekha–Nandini relation. II alone is insufficient.
Conclusion I alone is sufficient while II alone is not sufficient.