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How is X related to Y? Statement I: X is the brother of Z. Statement II: Z is the daughter of Y. Which statement(s) is/are sufficient to answer?

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

Step-by-Step Solution

I links X only to Z; II links Z only to Y. Together, X is the brother of Y's daughter Z, so X is Y's son.
Answer: B) Both statements together are needed (neither alone is sufficient)

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