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Five books A, B, C, D and E are placed one above another in a single stack. Which book is at the top? Statement I: A is immediately above B, and C is at the very bottom. Statement II: D is immediately above A, and E is immediately below B. Which statement(s) are sufficient to answer the question?

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

Step-by-Step Solution

Combining gives the block D-A-B-E with C at the bottom, i.e. D, A, B, E, C from top, so D is on top. Neither statement alone fixes the full order.
Answer: B) Both statements together are needed (neither alone is sufficient)

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