Question

How do you evaluate `Log 4 – log 400,000`?

Answer 1

`-5`

Explanation:

Use `log ab = log a + log b, log a^n = n log a and log 10 =1`

Here, `log 4 - log 200000=log 4 - log(4X 100000)`

`=log 4 - (log 4 + log !0^5)`

`= -5 log 10 = -5 (1) = -5`