Question

Directions: Below is a sequence in which one term is missing. Choose the correct alternative from the given ones that will complete the series.

4, 8, 28, 80, 244, ?

1. 252
2. 428
3. 628
4. 728

Answer 1

Correct Answer - Option 4 : 728

The pattern followed here is:

(3)¹ + 1 = 3 + 1 = 4

(3)² - 1 = 9 - 1 = 8

(3)³ + 1 = 27 + 1 = 28

(3)⁴ - 1 = 81 - 1 = 80

(3)⁵ + 1 = 243 + 1 = 244

(3)⁶ - 1 = 729 - 1 = 728

So, In place of '?' 728 will come.

Hence, "728" is the correct answer.