Multiple choice

Find the wrong word in the Series. 18, 22, 25, 30, 36

  1. 18

  2. 22

  3. 25

  4. 30

  5. 36
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Differences: 22-18=4, 25-22=3, 30-25=5, 36-30=6. The pattern of differences should be consistent. If the series was 18, 21, 25, 30, 36 (diffs 3, 4, 5, 6), then 22 is the wrong term.

AI explanation

The series is based on adding consecutive prime numbers. Starting from 18, adding 5 gives 23, adding 7 gives 30, and adding 11 gives 41. Since the second term should be 23 to properly add the prime number 5, the number 22 is incorrect.

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