Multiple choice

Find the wrong number in the series given below. 1331 1431 1631 1931 2231 2831

  1. 1431

  2. 1631

  3. 1931

  4. 2231
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D Correct answer
Explanation

The series follows a pattern of adding consecutive multiples of 100: +100, +200, +300, +400, +500. Starting from 1331, this gives 1431, 1631, 1931, 2331, 2831. The number 2231 breaks this pattern since 1931 + 400 = 2331, not 2231.

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