Multiple choice

Find the wrong number in the series: 17 , 23, 31, 41, 53, 69

  1. 23

  2. 31

  3. 41

  4. 69
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D Correct answer
Explanation

The pattern in the series is: 17 (+6) = 23, 23 (+8) = 31, 31 (+10) = 41, 41 (+12) = 53. Following this pattern of increasing the difference by 2 each time, the next term should be 53 (+14) = 67, not 69. Therefore, 69 is the wrong number in the series.

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