Question

Determine a soma dos 11 primeiros termos da P.G (1,2,4,...)​

Answer 1

sn = a1.(q^n - 1) / q-1

s11 = 1. (2¹¹ - 1) / 2-1

s11 = (2¹¹ - 1)

s11 = (2048 - 1)

s11 = 2047