Multiple choice general knowledge math & puzzles

10, 14, 16, 18, 21, 24, 26

  1. 26

  2. 24

  3. 21

  4. 18
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The series 10, 14, 16, 18, 21, 24, 26 contains seven numbers. All numbers except 21 are even (divisible by 2). The number 21 is odd, making it the odd one out based on parity.

AI explanation

All the other terms are even numbers (10, 14, 16, 18, 24, 26), while 21 is the only odd number, making it the outlier. The pattern here is simply parity — spotting which number doesn't share the evenness of the rest.

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