Multiple choice

In each of the following number-series only one number is wrong. Find out that wrong number. 17 26 43 70 112 181

  1. 43

  2. 112

  3. 181

  4. 70

  5. 26
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D Correct answer
Explanation

The series follows the pattern where each term equals the sum of the previous two terms plus 5: 17+26+5=48, not 43. The correct sequence should be 17, 26, 48, 79, 132, 216. The number 43 breaks this pattern.

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