Question

soma da pg infinita
1/5, 1/25, 1/125.

Answer 1

S = a1 / 1 - q

S = 1/5 / 1 - (1/25 / 1/5)

S = 1/5 / 1 - 1/5

S = 1/5 / 4/5

S = 1/5 x 5/4

S = 1/4