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      Question

      The LCM of two natural numbers is 12 times their HCF.

      If the product of given two numbers is 10,800, then find the LCM of the numbers.
      A 360 Correct Answer Incorrect Answer
      B 480 Correct Answer Incorrect Answer
      C 600 Correct Answer Incorrect Answer
      D 300 Correct Answer Incorrect Answer

      Solution

      Let the HCF of the number be 'H'. So, LCM = 12H Product of two numbers = Product of their HCF and LCM So, 12H X H = 10,800 Or, H2 = 900 Or, 'H' = 30 or, H = - 30 Since, HCF cannot be negative. So, 'H' = 30 Therefore, LCM = 12 X 30 = 360

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