Question

Complete the series given below.
$6$, $40$, $276$ ?

• A. $2168$
• B. $1924$
• C. $468$
• D. $9612$

Answer 1

The correct option is B $1924$

The pattern followed is $\frac{4\times 7^n+2^n}{5}$ for n $\in$ N

So, next in series is for $n=4$

$\frac{4\times 7^4+2^4}{5}=1924$