Multiple choice

Directions: Choose the pair of the numbers, which comes next in the given series. 9, 12, 11, 14, 13, 16, 15, __

  1. 14, 13

  2. 18, 21

  3. 14, 17

  4. 12, 13

  5. 18, 17
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is a simple alternating addition and subtraction series. First, 3 is added, then 1 is subtracted, then 3 is added, 1 subtracted, and so on.

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