Question

Qual a soma dos 11 primeiros termos da p.g. (625,125,25...)

Answer 1

$(5 {}^{4} + 5 {}^{3} + {5}^{2} + 5 {}^{1} + 5 {}^{0} + 5 {}^{ - 1} + {5}^{ - 2} + {5}^{ - 3} + {5}^{ - 4} + {5}^{ - 5} + {5}^{ - 6} ) \\ \\ 625 + 125 + 25 + 5 + 1 + \frac{1}{5} + \frac{1}{25} + \frac{1}{125} + \frac{1}{625} + \frac{1}{3125} + \frac{1}{15625} \\ \\ 781,209984$