Question

sum of n terms of A. P is n/2[a+(n - 1). true or false​

Answer 1

Answer:

false, sum of terms is n/2[2a + (n-1)d]

Answer 2

$\mathfrak \pink{false \: because \: sum \: of \: n \: terms \: = \frac{n}{2} (a + (n - 1)d)} \\ \\ \huge \bigstar\color{royalblue}{PLEASE \: \: MARK \: \: ME \: \: AS \: \: } \\ \huge \color{royalblue}{ THE \: \: BRAINLIEST \: \: AND \: \:} \\ \huge \color{royalblue}{FOLLOW} \color{black} \bigstar$