Question

Find the wrong term of the series :

$5,9,17,35,65,129$

• A. $65$
• B. $35$
• C. $17$
• D. $9$

Answer 1

The correct option is B $35$

Given series is: 5, 9, 17, 35, 65, 129.
Here, the difference between two consecutive terms is: +4, +8, +16, +32, +64.
Clearly, 17 + 16 = 33.
Therefore, 35 is the wrong term.
Hence, option (B) is the correct answer.