# Can Your Find The Sum Of The First 10 Terms 80-20+5+.... ? A) 80 B) 4 C) 107 D) 64

${\lim}_{k \to \infty} \left({\sum}_{n = 0}^{k} \left(\frac{80}{4} ^ n \cdot {\left(- 1\right)}^{n}\right)\right) = 64$