Let us evaluate:

3

If 3 + log₁₀x = 2log₁₀y, then express x by y

4

Let us evaluate:

log₂[log₂{log₃ (log₃27³)}]

4

Let us evaluate:

log₃4 × log₄5 × log₅6 × log₆7 × log₇3

4

Let us evaluate: