=
=
=
=
.
log 27 = 1.431
log
= 1.431
3 log 3 = 1.431
log 3 = 0.477
log 9 = log(
)= 2 log 3 = (2 x 0.477) = 0.954
=56*0.30103 =16.85768.
Its characteristics is 16.
Hence, the number of digits in is 17.
Given that, log 64 = 1.8061
i.e
--> 3 log 4 = 1.8061
--> log 4 = 0.6020
--> 2 log 4 = 1.2040
Therefore, log 16 = 1.2040
X=150m
so, a+b=1
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