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Sticky Note
Complet the series 11 14 18 21?
  1. 23
  2. 24
  3. 25
  4. 26
Explanation

To find the next number in the series 11, 14, 18, 21, let's analyze the pattern of differences:

  • 14−11=314 - 11 = 3
  • 18−14=418 - 14 = 4
  • 21−18=321 - 18 = 3

The differences alternate between +3 and +4.
Following this pattern:

  • After 2121, add 4: 21+4=25

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