Question

Find the wrong term in the givens series.

9, 13, 21, 37, 69, 132, 261

• A. 21
• B. 37
• C. 69
• D. 132

Answer 1

The correct option is D 132

Given terms are: 9, 13, 21, 37, 69, 132, 261
Here, the difference between the consecutive terns of the series is +4, +8, +16, +32, +64, +128.
Clearly, 69 + 64 = 133.
Therefore, the number 132 is to be replaced by 133.
Hence, option (D) is the correct answer.