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    • Question

      The HCF and LCM of two natural numbers are 10 and 60,

      respectively. What is the difference between the two numbers, if one of the numbers is 30?
      A 10 Correct Answer Incorrect Answer
      B 15 Correct Answer Incorrect Answer
      C 20 Correct Answer Incorrect Answer
      D 30 Correct Answer Incorrect Answer

      Solution

      Given:
      - HCF = 10
      - LCM = 60
      - First number = 30
      Using the formula:
      HCF × LCM = First number × Second number
      10 × 60 = 30 × Second number
      600 = 30 × Second number
      Second number = 600 / 30 = 20
      Difference between two numbers: 30 - 20 = 10

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