Question: Which of the following is NOT a characteristic of greedy algorithms?

Options:

1. They make decisions based on current information
2. They do not reconsider previous decisions
3. They guarantee an optimal solution for all problems
4. They are often faster than other algorithms

Correct Answer: They guarantee an optimal solution for all problems

Solution:

Greedy algorithms do not guarantee an optimal solution for all problems; they work well for specific types of problems.