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      Question

      Three numbers are in the ratio 1:4:5 respectively. If

      the HCF of the numbers is 7, then find the LCM of the numbers.
      A 105 Correct Answer Incorrect Answer
      B 120 Correct Answer Incorrect Answer
      C 98 Correct Answer Incorrect Answer
      D 140 Correct Answer Incorrect Answer

      Solution

      Numbers:
      1 Γ— 7 = 7
      4 Γ— 7 = 28
      5 Γ— 7 = 35
      LCM of 7, 28, and 35 = 140

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