What is \log_{10}2000+\log_{10}400+4\log_{10}25+5\log_{10}20 equal to?

  1. A. 10
  2. B. 16
  3. C. 18
  4. D. 20

Correct Answer: C. 18

Explanation

Using logarithmic properties, it evaluates to \log_{10}(2000 \times 400 \times 25^4 \times 20^5) = \log_{10}(10^{18}) = 18.

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