Multiple choice

Directions: Find the incorrect number in the series. 6, 11, 16, 20, 26

  1. 20

  2. 6

  3. 26

  4. 16
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A Correct answer
Explanation

The sequence is 6, 11, 16, 20, 26. The differences are 5, 5, 4, 6. If the pattern is +5, then 16+5=21 and 21+5=26. Thus, 20 is the incorrect number.

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