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      Question

      What is the difference between the LCM and HCF of 21,

      49?
      A 140 Correct Answer Incorrect Answer
      B 24 Correct Answer Incorrect Answer
      C 50 Correct Answer Incorrect Answer
      D 132 Correct Answer Incorrect Answer

      Solution

      LCM of 21 and 49 = 147 HCF of 21 and 49 = 7 Required difference = 147 – 7 = 140

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