If log_a m = n, express a^{n - 1} in terms of a and m.

Given log₂ x = m and log₅ y = n.

(i) Express 2^{m - 3} in terms of x.

(ii) Express 5^{3n + 2} in terms of y.

The value of log₅ 75 - log₅ 3 is :

1. 72

2. 2

3. 25

4. 5

The value of log₅ 125 ÷ log₅ $\sqrt{5}$ is :

1. 5

2. 120

3. 6

4. 60