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If log102=0.3010 and log103=0.4771, eval...

If log102=0.3010 and log103=0.4771, evaluate; without using logarithm tables, log104.5

A.

0.3010

B.

0.4771

C.

0.6532

D.

0.9542

Correct answer is C

If log102=0.3010 and log103=0.4771,

log104.5=log10(3×32)

log103+log103log102=0.4771+0.47710.3010

= 0.6532