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Is X heavier than Y? Statement I: X is heavier than Z, and Z is heavier than Y. Statement II: Y is lighter than W. Which statement(s) is/are sufficient to answer the question?

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

Step-by-Step Solution

From I, X > Z > Y, so X is heavier than Y. II compares Y with W and says nothing about X.
Answer: C) Statement I alone is sufficient but Statement II alone is not

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