Multiple choice

Find out the wrong number in the following number series. 1253 1278 1312 1352 1401 1458

  1. 1253

  2. 1278

  3. 1312

  4. 1352

  5. 1401

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The pattern adds consecutive odd numbers starting from 25: 1253+25=1278, 1278+34=1312 (but 34 is not odd), 1312+40=1352, 1352+49=1401, 1401+57=1458. Looking more carefully: differences are 25, 34, 40, 49, 57 - which follow a pattern where the difference increases by 9, 6, 9, 8... actually 1312 breaks the expected pattern. The correct difference between 1278 and next should maintain the pattern. 1312 is the wrong term.