Multiple choice general knowledge math & puzzles

1, 4, 9, 16, 23, 25, 36

  1. 9

  2. 23

  3. 25

  4. 36
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The series contains perfect squares: 1 (1²), 4 (2²), 9 (3²), 16 (4²), 25 (5²), 36 (6²). The number 23 is not a perfect square, making it the odd one out. All other numbers are squares of consecutive integers.

AI explanation

The rest of the numbers are perfect squares (1=1², 4=2², 9=3², 16=4², 25=5², 36=6²), but 23 is not a perfect square, making it the odd one out. Recognizing the squares pattern quickly isolates the non-square term.

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