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Question: How is P related to Q? Statement I: P is the brother of R. Statement II: R is the son of Q. Which statement(s) are needed to answer the question?

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

Step-by-Step Solution

Statement I alone links P and R only; Statement II alone links R and Q only. Together, P is a brother of R and R is a son of Q, so P is a son of Q. Both are required.
Answer: D) Both statements together are needed (neither alone is sufficient)

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