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Multiple choice

Find the wrong number in the following number series. 25 31 23 33 19 37 13

  1. 37

  2. 33

  3. 13

  4. 31

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pattern: +6, -8, +6, -8, +6, -8. Starting from 25: 25+6=31, 31-8=23, 23+6=29 (but 33 given), 29-8=21 (but 19 given). 33 breaks the pattern and is wrong.

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