Multiple choice

Which of the following can be expressed as the sum of three consecutive positive integers?

  1. 18

  2. 37

  3. 40

  4. 56

  5. 65
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A Correct answer
Explanation

Let three consecutive positive integers are (a – 1), a, (a + 1), their sum is 3a. As a is the middle number and is an integer. So the sum must be divisible by 3. Out of given choices only choice (1) is a multiple of 3.

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