Multiple choice general knowledge math & puzzles

Which number is the odd one out? 9678 4572 5261 3527 7768

  1. 7768

  2. 3527

  3. 4572

  4. 9678
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

In all numbers except 3527, the sum of the digits is even: 9+6+7+8=30, 4+5+7+2=18, 5+2+6+1=14, 7+7+6+8=28. For 3527, the sum is 3+5+2+7=17, which is odd. Thus, 3527 is the odd one out.

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