Multiple choice

Find the wrong term in the following number series- 3 5 9 17 33 65 130

  1. 5

  2. 130

  3. 9

  4. 33

  5. 17
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B Correct answer
Explanation

The series 3, 5, 9, 17, 33, 65, 130 follows the pattern: ×2-1 repeatedly (3×2-1=5, 5×2-1=9, 9×2-1=17, 17×2-1=33, 33×2-1=65). Following this pattern, 65×2-1=129, not 130. The term 130 is incorrect and should be 129, making it the wrong term in the series.

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