what is the 7th term of the geometric sequence 10,2.2/5,2/25 (solve here)

Answer 1

I assume you meant:

10, 2, 2/5, 2/25
clearly a = 10 , r = 1/5

you should know your formulas.
term(n) = ar^(n-1)

term(7) = 10(1/5)^6
= 10/15625
= 2/3125

Answer 2

2/3125