Question

13 - if log 27 = 1.431, then the value of log 9 is:

Answer 1

$log(27) = 1.431 \\ 3 log(3) = 1.431 \\ log(3) = 0.477 \\ log(9 ) = 2 log(3) = 2 \times 0.477 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 0.954$