Logarithm - Arithmetic Aptitude Questions and Answers

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If log₁₀ 7 = a, then log_{10 $[ \frac { 1 } { 70 }]$}is equal to:

- (1 + a)

(1 + a)^-1

$\frac { a } { 10 }$

$\frac { 1 } { 10a }$

Answer : Option A

Explanation :

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