Multiple choice general knowledge math & puzzles

find the odd man out 41, 43, 47, 53, 61, 71, 73, 81

  1. 61

  2. 71

  3. 73

  4. 81
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

All numbers except 81 are prime numbers. 81 = 9 × 9 = 3^4 is a composite number (not prime), making it the odd one out.

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