Question

1 7 49 343 (?)

• A. 16807
• B. 1227
• C. 2058
• D. 2401
• E. None of these

Answer 1

The correct option is D 2401

Here, in the given series, increase sudden.
So, it must have multiplication series.

So, at the place of ? = 343 $\times$ 7
= 2401
Alternate Method
Here, in the given series, the given pattern could also be explained as
$\begin{array}{ccccc}1& 7& 49& 343& 2401\\ 7^0& 7^1& 7^2& 7^3& 7^4\end{array}$