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      Question

      If 'x' is the lowest positive integer divisible by 8,

      12 and 20, then find the second smallest positive integer which is divisible by all the three given numbers?
      A 240 Correct Answer Incorrect Answer
      B 360 Correct Answer Incorrect Answer
      C 480 Correct Answer Incorrect Answer
      D 600 Correct Answer Incorrect Answer

      Solution

      Lowest positive integer divisible by 8, 12 and 20 = LCM (8, 12, 20) So, LCM of (8, 12, and 20) = 2³ × 3¹ × 5¹ = 120 Therefore, the next larger number which is divisible by all the three given numbers = 2 × 120 = 240

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