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If log10 2 = 0.3010, the value of log10 80 is:

/ Aptitude, Logarithm / By
Question: If log10 2 = 0.3010, the value of log10 80 is:
[A].

1.6020

[B].

1.9030

[C].

3.9030

[D].

None of these

Answer: Option B

Explanation:

log10 80 = log10 (8 x 10)
= log10 8 + log10 10
= log10 (23 ) + 1
= 3 log10 2 + 1
= (3 x 0.3010) + 1
= 1.9030.