If the common ratio $r 1$, the sum of the first $n$ terms of a geometric series is —

Question

If the common ratio $r > 1$, the sum of the first $n$ terms of a geometric series is —

Accepted Answer

$\dfrac{a(r^{n} - 1)}{r - 1}$

Answer

$\dfrac{a(1 - r^{n})}{1 - r}$

Answer

$a(r^{n} - 1)$

Answer

$\dfrac{a r^{n}}{r - 1}$

If the common ratio r>1r > 1r>1, the sum of the first nnn terms of a geometric series is —