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Which one of the following numbers is the odd one out? 3, 5, 7, 9, 11

Competition practiceAnalogy & Classification
  • A5
  • B9
  • C3
  • D11

Step-by-Step Solution

3, 5, 7 and 11 are prime numbers, while 9 is composite. So 9 is the odd one out.
Answer: B) 9

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