Multiple choice

Directions: In this question, one term in number series is incorrect. Find out the incorrect number. 56, 72, 90, 110, 132, 139

  1. 72

  2. 110

  3. 132

  4. 139
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D Correct answer
Explanation

Pattern: 56 (+16) = 72, 72 (+18) = 90, 90 (+20) = 110, 110 (+22) = 132, 132 (+24) = 156. The last term 139 is incorrect.

AI explanation

The series follows a pattern of adding consecutive even numbers starting from 16. Adding 16 to 56 gives 72, adding 18 gives 90, adding 20 gives 110, and adding 22 gives 132. The next even number to add is 24, which makes the last term 132 + 24 = 156. Since the given last term is 139, it is the incorrect number in the series.

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