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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$

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

$a+(n-1)d$

$S_n =\frac{n}{2}\left\{2a+ \left(n-1\right)d\right\}$

$S_n =\frac{a\left(1-r^n\right)}{1-r}$