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      Question

      If the ratio of two numbers is 5:6 and their least

      common multiple (LCM) is 630, then find their greatest common multiple (HCF).  
      A 16 Correct Answer Incorrect Answer
      B 24 Correct Answer Incorrect Answer
      C 18 Correct Answer Incorrect Answer
      D 21 Correct Answer Incorrect Answer

      Solution

      The correct answer is D

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