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Question: How is P related to Q? Statement I: P is the son of Q's mother. Statement II: Q is the only daughter of her father. Which statement(s) are sufficient to answer the question?

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

Step-by-Step Solution

From I, P (a son) shares the same mother as Q, so P is Q's brother — sufficient by itself. II says nothing about P, so it is not sufficient. Statement I alone answers the question.
Answer: B) Statement I alone is sufficient but Statement II alone is not

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