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How is X related to Y? Statement I: X is 15 years older than Y. Statement II: X is the only brother of Y's mother. Which statement(s) is/are sufficient to answer the question?

Competition practiceData Sufficiency
  • ABoth statements together are needed (neither alone is sufficient)
  • BStatement II alone is sufficient but Statement I alone is not
  • CEither statement alone is sufficient
  • DStatement I alone is sufficient but Statement II alone is not

Step-by-Step Solution

From II, X is the brother of Y's mother, so X is Y's maternal uncle. The age gap in I does not establish any relationship.
Answer: B) Statement II alone is sufficient but Statement I alone is not

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