Respuesta :

Answer:

729, 6561, 59047

Step-by-step explanation:

do 9/1=9

81/9=9

9 is common difference.

use formula

1(9)^4-1=729

a3= final ans. 1=1st term 9= difference

1(9)^5-1=6561

1(9)^6-1=59047