Question

Which expression represents the series 1+5+25+125+625

Answer 1

Letter D thanks for asking for help

Answer 2

`1 = {5}^(0)`

`5 = {5}^(1)`

`25 = {5}^(2)`

`125 = {5}^(3)`

`625 = {5}^(4)`

option A is correct, it starts with the power of zero (equals always one, see it as

`(5)/(5)`

and it goes up to the power of 4