Question: What is the relationship between digital sum and traditional calculation methods as described in the passage?

Options:

1. Digital sum is a direct replacement for traditional methods.
2. Digital sum complements traditional methods.
3. Digital sum is less efficient than traditional methods.
4. Digital sum is unrelated to traditional methods.

Correct Answer: Digital sum complements traditional methods.

Solution:

The passage indicates that digital sum complements traditional methods by providing additional efficiency.