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1979 AMC 12 Question 18

AMC12 · 1979 AMC 12

Question 18

To the nearest thousandth, $\log_{10}2$ is $0.301$ and $\log_{10}3$ is $0.477.$ Which of the following is the best approximation of $\log_5 10?$
  1. $\frac87$
  2. $\frac97$
  3. $\frac{10}{7}$
  4. $\frac{11}{7}$
  5. $\frac{12}{7}$