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Question: How is P related to Q? Statement I: P is the son of R, who is the mother of Q. Statement II: Q is the brother of S. 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
  • CStatement I alone is sufficient but Statement II alone is not
  • DEither statement alone is sufficient

Step-by-Step Solution

From I, P and Q share mother R and P is male, so P is Q's brother — sufficient. II says nothing about P, so it is not sufficient.
Answer: C) Statement I alone is sufficient but Statement II alone is not

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