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      Question

      Three numbers are in the ratio 2:5:7 respectively. If

      the HCF of the numbers is 6, then find the LCM of the numbers.
      A 540 Correct Answer Incorrect Answer
      B 420 Correct Answer Incorrect Answer
      C 360 Correct Answer Incorrect Answer
      D 600 Correct Answer Incorrect Answer

      Solution

      Numbers:
      2 × 6 = 12
      5 × 6 = 30
      7 × 6 = 42
      LCM of 12, 30, and 42 = 420

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