Solution

Solution

Tractable problems can be solved in polynomial time, denoted as $P$. The time taken increases at a manageable rate relative to the size of the input. They are considered "efficiently solvable." Sorting a list with Merge Sort or Quick Sort, which have time complexity $O(n \log n)$, is tractable.

Intractable problems require super-polynomial time, often growing exponentially with the size of the input. They are impractical to solve for large inputs. The Traveling Salesman Problem is intractable (NP-hard): as the number of cities increases, the number of possible routes grows factorially.