Question

Evaluate: 2 log 3 + 3 log 4 + 4 log 5 - 2 log b

Answer 1

2 log 3 + 3 log 4 + 4 log 5 - 2 log b

= log 3^2 + log 4^3 + log 5^4 - log b^2
= log (9*64*625/b^2)
= log (360000/b^2)
unless b is a typo for 6, in which case you have log 10000