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      Question

      Find the sum of all the numbers between 3000 and 14000,

      which are divisible by 25, 30 and 40.
      A 64000 Correct Answer Incorrect Answer
      B 64800 Correct Answer Incorrect Answer
      C 55800 Correct Answer Incorrect Answer
      D None of these Correct Answer Incorrect Answer

      Solution

      LCM of 25, 30 and 40 = 600 So, desired numbers are: 3000, 3600, тАж, 13800 Number of terms = (13800 тАУ 3000)/600 + 1 = 19 Sum = (19/2) ├Ч [3000 + 13800] = 159,900

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