Logarithm

If log 27 = 1.431, then the value of log 9 is:

A 0.934

B 0.945

C 0.954

D 0.958

ANS:C - 0.954

log 27 = 1.431 log (3³ ) = 1.431 3 log 3 = 1.431 log 3 = 0.477 log 9 = log(3² ) = 2 log 3 = (2 x 0.477) = 0.954.

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