Which equation represents the partial sum of the geometric series?


125 + 25 + 5 + 1

25 + 5 + 1 + one-fifth

1 + one-fifth + StartFraction 1 Over 25 EndFraction + StartFraction 1 Over 125 EndFraction

StartFraction 1 Over 125 EndFraction + one-fifth + 5 + 125