Multiple choice

Directions: Find the wrong number in the following number series: 12, 37, 73, 122, 186, 272, 367

  1. 272

  2. 37

  3. 73

  4. 186

  5. 122
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The differences are: 37-12=25, 73-37=36, 122-73=49, 186-122=64, 272-186=86, 367-272=95. The differences should be squares (5^2, 6^2, 7^2, 8^2, 9^2, 10^2). 86 and 95 are incorrect; 272 is the culprit.

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