If log_x 0.0016 = 4, then the value of x is:

1. 2

2. 0.2

3. 0.1

4. 4

If log₁₀ 2 = 0.3, then log₁₀ 8 =

1. 0.9

2. 0.6

3. 1.2

4. none of these

If log₁₀ 2 = 0.3010 and log₁₀ 3 = 0.4771, then the value of log₁₀ 72 =

1. 1.8572

2. 0.8572

3. 0.5872

4. 1.5872