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Question: How many children does P have? Statement I: P's son G has exactly one brother. Statement II: P's daughter H has exactly one sister. Which statement(s) is/are sufficient to answer the question?

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

Step-by-Step Solution

I gives 2 sons but leaves daughters unknown; II gives 2 daughters but leaves sons unknown. Together: 2 sons + 2 daughters = 4 children.
Answer: C) Both statements together are needed (neither alone is sufficient)

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