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What is the number? Statement I: The number is the smallest two-digit prime number. Statement II: The number is one less than a dozen. 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 gives the smallest two-digit prime, 11. II gives 12 - 1 = 11. Each statement alone fixes the number.
Answer: D) Either statement alone is sufficient

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