Multiple choice

Find the next term in the following series: $31, 38, 44, 51, ... ...$

  1. $58$
  2. $57$
  3. $51$
  4. $55$
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B Correct answer
Explanation

The differences between consecutive terms are: 38-31=7, 44-38=6, 51-44=7. The pattern alternates between adding 7 and 6. Next term should be 51+6=57. This is an alternating addition series with two different increments.

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