The sum of the first $n$ terms of the series $5 + 55 + 555 + \ldots$ is —

Question

Accepted Answer

$\dfrac{5}{81}\left(10^{n+1} - 9n - 10\right)$

Answer

$\dfrac{5}{9}\left(10^{n+1} - 1\right)$

Answer

$5n$

Answer

$\dfrac{5}{81}\left(10^{n} - 9n\right)$

The sum of the first nnn terms of the series 5+55+555+…5 + 55 + 555 + \ldots5+55+555+… is —