Multiple choice

Choose the pair of the numbers which comes next in the given series.

28, 25, 5, 21, 18, 5, 14, _____.

  1. 11, 5

  2. 10, 7

  3. 11, 8

  4. 5, 10

  5. 10, 5
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

This is an alternating subtraction series with the interpolation of a random number 5 as every third number. In the subtraction series, 3 is subtracted, then 4, then 3, and so on.

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