Question

What is the 10th term of the sequence 625,125,25?

Answer 1

`0.00032`

Explanation:

`(125)/(625)=(1)/(5)`

`(25)/(125)=(1)/(5)`

`r=(1)/(5)`

`a_1=625`

`a_n=625\left((1)/(5)\right)^(n-1)`

`a_n=625\left((1)/(5)\right)^(10-1)`

`0.00032`