Multiple choice

Directions: Identify the wrong number in the series. 169, 218, 254, 269, 295, 304, 308

  1. 254

  2. 269

  3. 295

  4. 304

  5. 308
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The differences between consecutive terms are: 218-169=49 (7^2), 254-218=36 (6^2), 269-254=15 (not 5^2=25), 295-269=26 (not 4^2=16). The pattern is subtracting consecutive squares. 269 is the wrong term because 254 + 25 = 279, and 279 + 16 = 295.

AI explanation

The pattern involves subtracting the sum of the digits of the previous number from that number, which means subtracting consecutive odd numbers: 49, 36, 25, 16, 9, 4. Following this rule, 254 - 25 should equal 229, not 269. Therefore, 269 is the wrong number in the series.

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