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How is R related to S? Statement I: R is a sibling of S. Statement II: R's wife is the only daughter-in-law of S's mother. Which statement(s) is/are sufficient to answer?

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

Step-by-Step Solution

Statement I gives only 'sibling' without R's gender. Statement II says R has a wife and is a son of S's mother, so R is male and is S's brother.
Answer: A) Statement II alone is sufficient but Statement I alone is not

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