Question

Identify the term that will replace the ?

$2,7,27,107,427,?$

• A. $1262$
• B. $1707$
• C. $4027$
• D. $4207$

Answer 1

The correct option is B $1707$

The pattern is + 5, + 20, + 80, + 320, . i.e. $+(5\times 1^2)$, $+(5\times 2^2)$, $+(5\times 4^2)$, $+(5\times 8^2)$.....
So, missing term = 427 + (5 162) = 427 + 1280 = 1707
Hence,option B is the correct answer.