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What is the two-digit number N? Statement I: N is divisible by 9. Statement II: N is the square of 7. Which statement(s) are sufficient to answer?

Competition practiceData Sufficiency
  • ABoth statements together are needed (neither alone is sufficient)
  • BStatement II alone is sufficient but Statement I alone is not
  • CStatement I alone is sufficient but Statement II alone is not
  • DEither statement alone is sufficient

Step-by-Step Solution

I allows 18, 27, 36, … 99, so it is not enough. II gives directly, so II alone is sufficient.
Answer: B) Statement II alone is sufficient but Statement I alone is not

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