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      Question

      The LCM of two numbers is 720 while their HCF is 12. If

      one of the numbers is 120, then the other number is:
      A 72 Correct Answer Incorrect Answer
      B 144 Correct Answer Incorrect Answer
      C 180 Correct Answer Incorrect Answer
      D 240 Correct Answer Incorrect Answer

      Solution

      Given:
      - LCM of two numbers = 720
      - HCF of two numbers = 12
      - One number = 120
      Since,
      HCF of two numbers Γ— LCM of two numbers = First number Γ— Second number
      Second number = (12 Γ— 720) / 120 = 8640 / 120 = 72
      So, the other number is 72.

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