Which of the following is an arithmetic sequence?

Which of the following is an arithmetic sequence?

Explanation

An arithmetic sequence is a sequence of numbers where the difference between consecutive terms is constant.

Let’s check each option:

    B. 72, 73, 75, 78
    Differences: +1, +2, +3 → Not arithmetic

      A. 31, 32, 33, 34
      Common difference: +1 → Arithmetic

        C. 11, 15, 17, 23

        Differences: +4, +2, +6 Not arithmetic