# Chapter 12 - Section 12.7 - Common Logarithms, Natural Logarithms, and Change of Base - Vocabulary and Readiness Check: 7

The answer is both option (a) $\frac{\log 7}{\log 2}$ and (b) $\frac{\ln 7}{\ln 2}$

#### Work Step by Step

According to the 'Change of base law', $\log_{2} 7$ can be written correctly as both $\frac{\log 7}{\log 2}$ or $\frac{\ln 7}{\ln 2}$.

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