Question

The base of common logarithm is

• A. 2
• B. 5
• C. 10
• D. 1

Answer 1

The Correct Option is C

To solve the problem, we need to identify the base used in a common logarithm.

1. Understanding Common Logarithms:
A common logarithm is a logarithm with base 10. It is usually written as $ \log x $ without explicitly showing the base.

2. Definition:
The expression $ \log x $ refers to $ \log_{10} x $, which means "the power to which 10 must be raised to get $x$."

3. Conclusion:
Since the base of the common logarithm is 10, the correct answer is 10.

Final Answer:
The base of the common logarithm is $ \mathbf{10} $.