Question

Find the wrong number in the following series.

11, 35, 108, 328, 1009

1. 11
2. 35
3. 108
4. 328
5. 1009

Answer 1

Correct Answer - Option 5 : 1009

Calculation:

Considering the above series,

11, 35, 108, 328, 1009

The logic of the series can be explained as,

11 × 3 + 2 = 35

35 × 3 + 3 = 108

108 × 3 + 4 = 328

328 × 3 + 5 = 989

By observing the pattern, we can write

989 should be in the place of 1009

∴ The wrong number is 1009.