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What is the value of the number N? Statement I: N is a perfect square. Statement II: N lies strictly between 10 and 20. 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

I alone gives many squares; II alone gives 11 to 19. Together, the only perfect square between 10 and 20 is 16, so both are needed.
Answer: C) Both statements together are needed (neither alone is sufficient)

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