(i) 2 and 8
(ii) a³b and ab³

Solution:

(i) 2 and 8

According to the question, GM between a and b is √ab

We have a = 2 and b =8

GM = √2×8 = √16

GM = 4

(ii) a³b and ab³

According to the question, GM between a and b is √ab

We have a = a³b and b = ab³

GM = √(a³b × ab³) = √a⁴b⁴

GM = a²b²